True art and true science possess two unmistakable marks: the first, an inward mark, which is this, that the servitor of art and science will fulfil his vocation, not for profit but with self- sacrifice; and the second, an external sign, his productions will be intelligible to all the people whose welfare he has in view.

In our age the common religious perception of men is the consciousness of the brotherhood of man - we know that the well-being of man lies in the union with his fellow men. True science should indicate the various methods of applying this consciousness to life. Art should transform this perception into feeling.

Religion reveals the meaning of life, and science only applies this meaning to the course of circumstances.

I am obliged to renounce violence, and abstain from it altogether.

Power is a word the meaning of which we do not understand.

It is by those who have suffered that the world has been advanced.

It may be suggested by some books that it is not a sin to kill an animal, but it is written in our own hearts - more clearly than in any book - that we should take pity on animals in the same way as we do on humans.