In opposition to the absolutist ethics of non-violence, the author argues that in response to aggression and violence one has to use every means possible to prevent them. To resist violence is a moral duty of the individual. It would be desirable for violence to be prevented by strength of mind, but if strength of mind is not enough or the aggressor is insensitive to intellectual, spiritual and psychological impacts, one has to employ by accretion all necessary means. Ethics is called upon to set limits to the employment of the means of countering violence.