One must be truly able to say I in order to know the mystery of the Thou in its whole truth.

Meet the world with the fullness of your being, and you shall meet God. Of you wish to believe, love.

I do, indeed, close my door at times and surrender myself to a book, but only because I can open the door again and see a human face looking at me.

When a man has made peace within himself, he will be able to make peace in the whole world.

The basic word I-Thou can be spoken only with one's whole being. The concentration and fusion into a whole being can never be accomplished by me, can never be accomplished without me. I require a Thou to become; becoming I, I say Thou.

One cannot in the nature of things expect a little tree that has been turned into a club to put forth leaves.

To be old can be glorious if one has not unlearned how to begin.