Love is responsibility of an I for a You: in this consists what cannot consist in any feeling - the equality of all lovers.
Martin BuberHere is the infallible test. Imagine yourself in a situation where you are alone, wholly alone on earth, and you are offered one of the two, books or men. I often hear men prizing their solitude but that is only because there are still men somewhere on earth even though in the far distance. I knew nothing of books when I came forth from the womb of my mother, and I shall die without books, with another human hand in my own. 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 being looking at me.
Martin BuberMan is like a tree. If you stand in front of a tree and watch it incessantly, to see how it grows, and to see how much it has grown, you will see nothing at all. But tend it at all times, prune the runners and keep it free of beetles and worms, and all in good time-it will come into its growth. It is the same with man: all that is necessary is for him to overcome his obstacles, and he will thrive and grow. But it is not right to examine him hour after hour to see how much has already been added to his stature.
Martin BuberEvery man's foremost task is the actualization of his unique, unprecedented and never-recurring potentialities, and not the repetition of something that another, and be it even the greatest, has already achieved.
Martin BuberBut it can also happen, if will and grace are joined, that as I contemplate the tree I am drawn into a relation, and the tree ceases to be an It. . . . Does the tree then have consciousness, similar to our own? I have no experience of that. But thinking that you have brought this off in your own case, must you again divide the indivisible? What I encounter is neither the soul of a tree nor a dryad, but the tree itself.
Martin Buber