Reason is man's faculty for grasping the world by thought, in contradiction to intelligence, which is man's ability to manipulate the world with the help of thought. Reason is man's instrument for arriving at the truth, intelligence is man's instrument for manipulating the world more successfully; the former is essentially human, the latter belongs to the animal part of man.

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'.

People think that to love is simple, but that to find the right object to love - or to be loved by - is difficult.

Loving becomes, and the ability to love, becomes one of the most important things in life.

We all dream; we do not understand our dreams, yet we act as if nothing strange goes on in our sleep minds, strange at least by comparison with the logical, purposeful doings of our minds when we are awake.

A new question has arisen in modern man's mind, the question, namely, whether life is worth living...No sensible answer can be given to the question...because the question does not make any sense.

In the development of both capitalism and communism, as we visualize them in the next fifty or a hundred years, the processes that encourage human alienation will continue.