The aim of this review is five-fold: (1) to consider one both as an indefinite pronoun meaning ‘someone’ or ‘a person’ and as a self-inclusive pronoun; (2) to investigate the possessives and reflexives used with one; (3) to pinpoint in time the arrival of one's and oneself; (4) to show differences between British and American use; and (5) to look at parallels to self-inclusive one in English and other languages.