The Kingdom of God is Within You by Leo Tolstoy Chapter 12 Page 134

has taken will be emancipated from the hypnotic influence in which they were held, or at least will be nearer being emancipated from it.

Even if a few only come to themselves, and boldly explain to the others all the wickedness of such a crime, the influence of these few may rouse the others to shake off the controlling suggestion, and the atrocity will not be perpetrated.

More than that, if a few men, even of those who are not taking part in the affair but are only present at the preparations for it, or have heard of such things being done in the past, do not remain indifferent but boldly and plainly express their detestation of such crimes to those who have to execute them, and point out to them all the senselessness, cruelty, and wickedness of such acts, that alone will be productive of good.