The Kingdom of God is Within You by Leo Tolstoy Chapter 12 Page 216

one aim of your life ought to be to purify yourself from falsehood and to confess the truth. And you need only do that and your situation will change directly of itself.

There is one thing, and only one thing, in which it is granted to you to be free in life, all else being beyond your power: that is to recognize and profess the truth.

And yet simply from the fact that other men as misguided and as pitiful creatures as yourself have made you soldier, tzar, landowner, capitalist, priest, or general, you undertake to commit acts of violence obviously opposed to your reason and your heart, to base your existence on the misfortunes of others, and above all, instead of filling the one duty of your life, recognizing and professing the truth, you feign not to recognize it and disguise it from yourself and others.