The Kingdom of God is Within You by Leo Tolstoy Chapter 10 Page 46

It is a mistake, because the men at a lower stage of culture, the, men and the nations who are represented as the obstacle to the realization of the Christian order of life, are the very people who always pass over in masses all at once to any truth that has once been recognized by public opinion.

And therefore the transformation of human life, through which men in power will renounce it, and there will be none anxious to take their place, will not come only by all men consciously and separately assimilating the Christian conception of life. It will come when a Christian public opinion has arisen, so definite and easily comprehensible as to reach the whole of the inert mass, which is not able to attain truth by its own intuition, and therefore is always under the sway of public opinion.