The essence of any religion lies solely in the answer to the question: why do I exist, and what is my relationship to the infinite universe that surrounds me? It is impossible for there to be a person with no religion (i.e. without any kind of relationship to the world) as it is for there to be a person without a heart. He may not know that he has a religion, just as a person may not know that he has a heart, but it is no more possible for a person to exist without a religion than without a heart.

Whenever my life came to a halt, the questions would arise: Why? And what next?

Everyone thinks of changing the world, but no one thinks of changing himself.

If, then, I were asked for the most important advice I could give, that which I considered to be the most useful to the men of our century, I should simply say: in the name of God, stop a moment, cease your work, look around you.

I'd rather end up wishing I hadn’t than end up wishing I had.

Art is not, as the metaphysicians say, the manifestation of some mysterious idea of beauty or God; it is not, as the aesthetical physiologists say, a game in which man lets off his excess of stored-up energy; it is not the expression of man's emotions by external signs; it is not the production of pleasing objects; and, above all, it is not pleasure; but it is a means of union among men, joining them together in the same feelings, and indispensable for the life and progress toward well-being of individuals and of humanity.

but that what was for him the greatest and most cruel injustice appeared to others a quite ordinary occurrence.