Modern man, if he dared to be articulate about his concept of heaven, would describe a vision which would look like the biggest department store in the world, showing new things and gadgets, and himself having plenty of money with which to buy them.

If I perceive in another person mainly the surface, I perceive mainly the differences,that which separates us. If I penetrate to the core, i perceive our identity, the fact of our brotherhood. This relatedness from center to center - instead of that from periphery to periphery - is 'central relatedness'.

Man is the only animal who does not feel at home in nature, who can feel evicted from paradise, the only animal for whom his own existence is a problem that he has to solve and from which he cannot escape. He cannot go back to the prehuman state of harmony with nature, and he does not know where he will arrive if he goes forward. Man's existential contradiction results in a state of constant disequilibrium. This disequilibrium distinguishes him from the animal, which lives, as it were, in harmony with nature.

If you take a salesman, who sells a useless commodity, he feels like a fraud.

To hope means to be ready at every moment for that which is not yet born, and yet not become desperate if there is no birth in our lifetime.

The successful revolutionary is a statesman, the unsuccessful one a criminal.

Love is not easy. All great religions postulate love as one of the greatest accomplishments. If it were that easy, or as easy as most people think, certainly, the great religious leaders would have been rather naive.