One of Catherine of Siena's most well‐known but frequently misunderstood teachings is that of the “cell of self‐knowledge” (cella del cognoscimento di sé).Footnote 1 Declared a Doctor of the Church in 1970 by Paul VI, Catherine (1347‐1830) taught that self‐knowledge is vital to the spiritual progress of the “pilgrim traveler.” The teaching pertains to the intellect (which, for Catherine, means the soul's powers of “understanding” and “memory”) and the will (the soul's third power).Footnote 2 For Catherine, prayer is founded on and flows from self‐knowledge. We may be surprised at how seldom Catherine explicitly mentions prayer in the Dialogue. The reason is that self‐knowledge, to a large extent, is prayer.Footnote 3
The theme of knowledge of self and God was a familiar one in medieval spirituality and was derived largely from St. Augustine.Footnote 4 Benedict Hackett notes its place in Augustine's spirituality:
Possibly the best introduction to, if not the very basis of, Augustine's spirituality is his nouerim me, nouerim te (“May I know myself. May I know you!). To know the soul and to know God was, he said, the whole endeavour. The soul and God are the twin poles around which his reflections of the spiritual life revolve …. It has been noted that Augustine's quest for self‐knowledge is directed towards amor as distinct from appetitus for other kinds of knowledge. In simple terms, to know oneself is humility—the antidote to the wrong kind of love, amor sui, meaning perverse self‐love. But self‐knowledge also leads to knowledge of God, since the soul is made in the image of God, and knowledge of God inevitably generates love of God and, when perfected, union with him, in other words, direct vision and enjoyment of God himself, the supreme good. But there can be no advance towards the perfection of charity, unless perverse self‐love is eradicated.Footnote 5
Many of the medieval writings on the subject were anonymous and associated not only with Augustine but also Anselm, Bernard, Hugh of St. Victor, and several others.Footnote 6 The theme was, to a degree, inspired by Scripture:
It is not good for a man to be without knowledge, and he who makes haste with his feet misses his way. (Prov 19:2)
Before judgment, examine yourself, and in the hour of visitation you will find forgiveness. (Sir 18:20)
The ancient Greeks, as is well known, also had great appreciation for self‐knowledge as reflected in the famous inscription on the shrine at Delphi: “Know thyself.”Footnote 7 To what extent these antecedents may have influenced Catherine's own teaching is unclear, but, as Domenico Abbrescia observes, Catherine elaborates the basic elements of the tradition in a form which is personal and which has a practical function in the spiritual life.Footnote 8
Catherine's personal understanding of herself and of God undoubtedly developed in the course of her lifetime, as did her teaching on self‐knowledge. However, in its initial stage the teaching was directly related to a mystical experience which occurred at the beginning of her three years of solitude in the “cell” of her family house when she was about sixteen years of age. Raymond of Capua, her confessor, disciple, and friend, records it in his vita of Catherine, the Legenda major:
The life of the Spirit is received and lived out in practice through the word of the Lord. Accordingly I take as my starting‐point that pithy word of doctrine which was spoken to her at the outset by her Teacher, the Creator of the universe. She often recounted for her confessors, including my unworthy self, what took place when our Lord Jesus Christ first began to appear to her. He appeared to her one day while she was at prayer, and said: “Do you know, daughter, who you are and who I am? If you know these two things you have beatitude in your grasp. You are she who is not, and I AM HE WHO IS. Let your soul become penetrated with this truth, and the Enemy can never lead you astray ….Footnote 9
This is the “fundamental maxim” which would become the cornerstone of Catherine's spiritual life and teaching. Its importance is underscored by Raymond:
Take note, Reader, that this is the solid foundation which our Lord laid down in the beginning for Catherine's life of union with him. This is his betrothal pledge to her. Assuredly it is a foundation fit to carry a building of the loftiest spiritual perfection, holding it erect and unshaken, come what may of wind or tempest.Footnote 10
“You are she who is not, and I AM HE WHO IS.” The second part of the maxim is an adaptation of God's words to Moses in the burning bush:
Then Moses said to God, “If I come to the people of Israel and say to them, ‘The God of your fathers has sent me to you,’ and they ask me, ‘What is his name?’ what shall I say to them?” God said to Moses: “I AM WHO I AM.”Footnote 11
The first part of the maxim, “You are she who is not,” is its antithesis. What could this possibly have meant to a teenage Tuscan girl of the trecento? Giacinto D'Urso says it meant simply that “at the root of our being there is nothing of ours, but only a gift of God.”Footnote 12 Ignazio Paci says that its meaning is consistent with 1 Cor 4:7, “What have you that you have not received from God?”Footnote 13 Years later, the words of the fundamental maxim would appear in the Dialogue with Catherine's own commentary:
[F]or I am who I am, whereas you have no being at all of yourselves. What being you have is my doing; I am the Creator of everything that has any share in being.Footnote 14
[F]or I am she who is not. And if I should claim to be anything of myself, I should be lying through my teeth. … For you alone are who are, and whatever being I have and every other gift of mine I have from you, and you have given it all to me for love, not because it was my due.Footnote 15
I want her to be humble, to see that of herself she is nothing and to recognize that her existence and every gift beyond that comes from me, that I am her life.Footnote 16
As Ann Walsh points out, the maxim was much more than a philosophical understanding for Catherine whose “whole life was a witness to this basic attitude … that man owes his existence to God, and this existence is the gift of a loving Father.”Footnote 17
Catherine's understanding of self‐knowledge initially may have been only that we participate in God's being and that apart from him we are nothing. In the course of her lifetime, however, her understanding of its truth deepened to the extent that in the Dialogue, written years later, the eternal Father now tells Catherine that self‐knowledge alone is not enough: “So, as I told you in the beginning, knowledge of the truth comes through self‐knowledge; not pure self‐knowledge, but seasoned (condito) and united with the knowledge of me in you (cognoscimento di me in te).”Footnote 18“Knowledge of me in you” or “knowledge of God's goodness in you” (cognoscimento della bontà di Dio in te)Footnote 19 becomes a second and deeper dimension of Catherine's doctrine of self‐knowledge after that of the fundamental maxim.
Self‐knowledge's two dimensions appear for the first time in one of Catherine's earliest extant letters which was written some three years before writing the Dialogue. In L T41 to Tommaso della Fonte, the cell of self‐knowledge is compared to a well (pozzo) in which we pass through the dry earth of self‐knowledge to the living water of knowledge of God:
Dearest father, I beg you to fulfill my longing to see you united with and transformed in God. But this is impossible unless we are one with his will. … If we were to ask that gentlest most loving young man and most merciful father, this is how he would answer us: “Dearest children, if you wish to discover and experience the effects of my will, dwell within the cell of your soul.” This cell is a well in which there is earth as well as water. In the earth we recognize our own poverty: we see that we are not. For we are not. We see that our being is from God. Oh ineffable blazing charity! I see next that as we discover the earth we get to the living water, the very core of the knowledge of God's true and gentle will which desires nothing else but that we be made holy. So let us enter into the depths of this well. For if we dwell there, we will necessarily come to know both ourselves and God's goodness. In recognizing that we are nothing we humble ourselves.Footnote 20
Later, in three letters written towards the end of 1377, Catherine uses yet another image to express the two dimensions of self‐knowledge: “the cell within a cell (nella quale cella trova un'altra cella)”Footnote 21 or “the cell of two rooms (due celle in una):”Footnote 22
This is the cell of true self‐knowledge, and there you will find knowledge of God's goodness [in you] (in te). This cell is really two rooms in one, and while you are in the one you must at the same time be in the other; otherwise your soul would end up either in confusion or presumption. For if you stayed in self‐knowledge, spiritual confusion would be the result. And if you stayed only in knowledge of God, you would end up in presumption. So the one has to be seasoned by the other, and the two made to be one. When this is accomplished you will arrive at perfection. Here is why. From knowledge of yourself you will gain hatred for your selfish sensuality, and because of that hatred you will be a judge. You will mount the bench of your conscience and demand an account of yourself, letting no sin pass without doing it justice. From this knowledge issues the spring of humility … .
In the knowledge of God you will discover the fire of divine charity, where you will find your pleasure on the cross with the spotless Lamb, searching out God's honor and the salvation of souls in continual and humble prayer.Footnote 23
The first cell, therefore, is the dimension of the dry earth in the previous image of the well. It is here that we know our poverty and nothingness apart from God which results in knowledge and hatred of one's puny rebellion against him by our “selfish sensual will.” It is here, especially, that we perceive our vices and “uproot” them. It is in the second cell, the “cell within the cell,” that we discover the “living water” and one of the facets of what Catherine calls “the truth of God the Father,”Footnote 24 that is, his “true and gentle will which desires nothing else but that we be made holy.”Footnote 25 Here it is that we also discover “the fire of divine charity,” God's radical love for us. We also see the virtues in God, and because God is present in us we also discover the virtues, as if in a germinal state, in ourselves.Footnote 26 Catherine urges us to “plant” the virtues; the first of which to begin “growing” are humility, charity, and patience.Footnote 27
The existence of a second dimension of self‐knowledge conveys the fact that knowledge of self invariably includes knowledge of God (and his goodness) in oneself, “[j]ust as the fish is in the sea and the sea in the fish.”Footnote 28 The two dimensions are absolutely inseparable owing to humanity's creation in God's image and likeness. Because the doctrine of self‐knowledge in both its dimensions pertains to all truth, Catherine can confidently say that it is the fundamental principle of spiritual development: “Herein lies all our perfection. There are many other things, but this is the principal one.”Footnote 29
Catherine, however, does not retain the images of the well or the cell within a cell in the Dialogue, although the substance of the teaching appears in another form. In “il libro” she speaks only of “knowledge of yourself, and of me in yourself”Footnote 30 or “the goodness of God in oneself”Footnote 31 and of the necessity of keeping both kinds of knowledge together:
I mean that I do not want [the soul] to, nor should she, think about her sins either in general or specifically without calling to mind the blood and greatness of my mercy. Otherwise she will only be confounded. For if self‐knowledge and the thought of sin are not seasoned (condito) with remembrance of the blood and hope for mercy, the result is bound to be confusion.Footnote 32
Catherine now leaves behind the images of the well and two cells and introduces her final image of self‐knowledge which is more comprehensive and better able to express the various dimensions of truth found in it.
Catherine's teaching on self‐knowledge comes to maturity in her image of the peaceful sea (mare pacifico) which appears in both the letters and in the Dialogue. In L T226 to Raymond of Capua, which Foster and Ronayne date to April 14, 1378, Catherine writes:
For when a soul sees not self for self's sake, but self for God and God for God, inasmuch as he is supreme eternal Goodness, all‐worthy of our love—contemplating in him the effect of his fiery and consummate love—it finds in him the image of his creature, and in itself, that image, it finds him. That is, the love a man sees that God has for him, he, in turn extends to all creatures, and so at once feels compelled to love his neighbour as himself, for he sees how supremely he himself is loved by God, when he beholds himself (sagguardando sè) in the wellspring (fonte) of the sea of his divine Essence. He is then moved to love self in God and God in self, like a man who, on looking into the water, sees his image there and seeing himself, loves and delights in himself. If he is wise, he will be moved to love the water (fonte) rather than himself, for had he not first seen himself, he could not have loved or been delighted by himself; nor removed the smudge on his face revealed to him in the well.
Think of it like this, my dearest sons: we see neither our dignity nor the defects that mar the beauty of the soul unless we go and look at ourselves in the still sea (mare pacifico) of the divine Essence wherein we are portrayed; for from it we came when God's Wisdom created us to his image and likeness.Footnote 33
Four moments can be identified: when one “sees how supremely he himself is loved by God,”“beholds himself in the wellspring of the sea of the divine Essence,” is “moved to love the water” and sees “the defects that mar the beauty of the soul.” Let us look more closely at each.
1. “He sees how supremely he himself is loved by God.” Catherine repeatedly stresses the importance of our “opening the eye of the intellect” (l'occhio dell'intelletto), the pupil of which is faith, to see the truth about God and his love for us.Footnote 34 The blood of the Crucified reveals this truth most clearly:
Your mind's eye, illuminated by faith, ought to be fixed on my only‐begotten Son, Christ crucified ….Footnote 35
O dearest daughter whom I so love, you who are my bride, rise above yourself and open your mind's eye. Look at me, infinite Goodness, and see my unspeakable love for you and my other servants.Footnote 36
In other words, one begins by “contemplating in [God] the effect of his fiery and consummate love.” God wants us to take this first step; indeed, he invites us to gaze into him.Footnote 37 The fact of God's love is so arresting that it causes us to continue gazing.
2. “He beholds himself in the wellspring of the sea of the divine Essence.” Catherine saw the sea apparently for the first time in 1375 when she went to Pisa and was so taken by its beauty that thereafter she would often refer to God as a peaceful sea.Footnote 38 If the mare pacifico is beautiful, then the human person's image reflected in it is also beautiful: “He is then moved to love self in God and God in self, like a man who, on looking into the water, sees his image there and seeing himself, loves and delights in himself.” The reflecting water is compared to a mirror in the very last chapter of the Dialogue:
This water is a mirror in which you, eternal Trinity, grant me knowledge; for when I look into this mirror, holding it in the hand of love, it shows me myself, as your creation, in you, and you in me through the union you have brought about of the Godhead in your humanity.Footnote 39
We see now that we are made in God's image and likeness and that we reflect his beauty and goodness; we also realize that we have no being apart from him anymore than our reflection on the water's surface can exist apart from the water itself. This moment, therefore, includes one's realization of the truth of the fundamental maxim, “You are she who is not, and I AM HE WHO IS,” as well as the first part of “the truth of God the Father”: we are made in God's image and likeness. Catherine uses the image of “the gentle mirror” (lo specchio dolce) to express this last point:
As the soul comes to know herself she also knows God better, for she sees how good he has been to her. In the gentle mirror of God she sees her own dignity: that through no merit of hers but by his creation she is the image of God.Footnote 40
3. “Moved to love the water,” we are, by implication, gradually transformed into it.Footnote 41 Because love always tends toward union with the beloved, our desire for union with God emerges. To love the water is to be gradually united with it, the prospect of which Catherine sets before us in the opening chapter of the Dialogue when she speaks of the soul's “continual humble prayer, grounded in the knowledge of herself and of God” by which “the soul is united with God.”Footnote 42 Furthermore, as the soul progresses towards union with God it perceives another facet of the truth of God the Father: his desire to be united with us, “sharing in [his] being and enjoying [his] supreme eternal tenderness and goodness.”Footnote 43 Union with God, however, will require a response on our part.
4. “Defects that mar the beauty of the soul” are also perceived. In the beauty of the peaceful sea we first see our likeness to God and then our dissimilarity to him: “the smudge (difetto) on his face.”Footnote 44
And in the mirror of God's goodness she sees as well her own unworthiness, the work of her own sin. For just as you can better see the blemish in your own face when you look at yourself in a mirror, so the soul who in true self‐knowledge rises up with desire to look at herself in the gentle mirror of God with the eye of understanding sees all the more clearly her own defects because of the purity she sees in him.Footnote 45
We see how selfish self‐love or the “selfish sensual will” has disfigured our personal reflection of the divine beauty and we then grasp the urgent necessity of its removal.Footnote 46 As H. McCabe says, “We become more acutely aware of our inadequacy before the mystery as we are brought closer to it.”Footnote 47 In the light of God's infinite beauty, we also see how sin has prevented the “fulfillment of the truth”Footnote 48 in us. Sin is literally “no‐thing” and to love it is to be transformed into nothing. “And where does the soul learn the gravity of its sin?” asks Catherine. “[Again,] in self‐knowledge.”Footnote 49 Kenelm Foster notes:
Her insistence on the need for self‐knowledge is not only, or even primarily, a way of saying that we must recognize ourselves to be sinners, and so acquire humility. Of course it is that; but Catherine always looks through the sin to the goodness that it thwarts and distorts—that is, to the soul's radical ‘likeness’ to the Creator whose image it bears.Footnote 50
This new knowledge of how selfish self‐love has disfigured the soul's divine likeness and prevented it from fully sharing in God's being and happiness causes “holy hatred” to rise up in oneself: “we love God and hate ourselves—not the self that is [God's] creation, but the self we see rebelling against our Creator.”Footnote 51 Knowledge of our poverty must also be joined with knowledge of God's mercy if despair is to be avoided: “[S]elf‐knowledge must be seasoned with knowledge of me, or it would end in confusion.”Footnote 52
Let us now briefly summarize Catherine's fully‐developed teaching on self‐knowledge as found in the image of the peaceful sea. In contemplating God's love and beauty, we see his image and likeness in ourselves; we discover God's presence in ourselves and our presence in him “as the fish is in the sea, and the sea is in the fish.” In God (i.e. the Son) we see the virtues and then discover them also within ourselves and realize that they are meant to increase. We also see that we have no existence apart from God; everything that we have is his gift to us. As we contemplate God's love for us, we return love for love. We crave union with God, the ground of our being and supreme Beauty, and come to see that he too desires to be in a personal love‐union with us in which he will share more fully his being and joy with us. The more clearly we see God the more we realize how our choice for selfish self‐love has disfigured our reflection of the divine beauty and prevented the fulfillment of truth in us and thus the urgent necessity of our “uprooting vice” and “planting virtue.” As selfish self‐love falls away, we grow towards union with God.
Knowledge of self and of God (or simply “self‐knowledge,” as Catherine often refers to it) is a theme which appears in the earliest of Catherine's extant letters and then re‐appears hundreds of times in all her works. She never tires of insisting on the necessity of one's returning or living in the “cell (or house) of self‐knowledge.” The exercise of self‐knowledge is meant to be ongoing owing to our frailty, proneness to self‐love and God's infinite nature. Self‐knowledge is a “holy abyss” because knowledge of God is spectacularly endless.Footnote 53 Catherine also speaks of the “grace of knowledge of ourselves and God.”Footnote 54 As such, it is meant to grow.
The capacity to enter into oneself for the sake of self‐knowledge is what Catherine means by the “interior cell” which is a habit she learned in her youth when her family took away her room and solitude and “she made for herself a secret cell within her own heart, and made up her mind never to go forth from it no matter what the business on which she was engaged in.”Footnote 55 Years later, in a letter to her close friend and follower Alessa dei Saracini, Catherine recommends the interior cell, a “dwelling place [that] is spiritual, and you carry it with you constantly.”Footnote 56
