The wrongfulness, the immorality of eating animal food has been recognized by all mankind during all the conscious life of humanity. Why, then have people generally not come to acknowledge this law? The answer is that the moral progress of humanity is always slow; but that the sign of true, not casual Progress, is in uninterruptedness and its continual acceleration. And one cannot doubt that vegetarianism has been progressing in this manner
Leo TolstoyThe life of our class, of the wealthy and the learned, was not only repulsive to me but had lost all meaning. The sum of our action and thinking, of our science and art, all of it struck me as the overindulgences of a spoiled child.
Leo Tolstoy