The Kingdom of God is Within You by Leo Tolstoy Chapter 12 Page 166

We know very well that we are only allowed to go on eating our dinner, to finish seeing the new play, or to enjoy to the end the ball, the Christmas fete, the promenade, the races or, the hunt, thanks to the policeman's revolver or the soldier's rifle, which will shoot down the famished outcast who has been robbed of his share, and who looks round the corner with covetous eyes at our pleasures, ready to interrupt them instantly, were not the policeman and the soldier there prepared to run up at our first call for help.

And therefore just as a brigand caught in broad daylight in the act cannot persuade us that he did not lift his knife in order to rob his victim of his purse, and had no thought of killing him, we too, it would seem, cannot persuade ourselves or others that the soldiers and policemen around us are not to