In times of change, learners inherit the earth

Exclusive love is a contradiction in itself.

The quest for certainty blocks the search for meaning. Uncertainty is the very condition to impel man to unfold his powers.

I think our danger is that we talk one thing, and we feel and act another thing.

In the 19th century inhumanity meant cruelty; in the 20th century it means schizoid self-alienation.

The right to express our thoughts means something only if we are able to have thoughts of our own

To love one person productively means to be related to his human core, to him as representing mankind. Love for one individual, in so far as it is divorced from love for man, can refer only to the superficial and to the accidental; of necessity it remains shallow.