If you do not smile, you are judged lacking in a 'pleasing personality' - and you need to have a pleasing personality if you want to sell your services, whether as a waitress, a salesman, or a physician.

Modern man lives under the illusion that he knows what he wants, while he actually wants what he is supposed to want.

The criterion of mental health is not one of individual adjustment to a given social order, but a universal one, valid for all men, of giving a satisfactory answer to the problem of human existence.

Exclusive love is a contradiction in itself.

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.

Only when man succeeds in developing his reason and love further than he has done so far, only when he can build a world based on human solidarity and justice, only when he can feel rooted in the experience of universal brotherliness, will he have tr

Love is an active power in man; a power which breaks through the walls which separate man from his fellow men, which unite him with others; love makes him overcome the sense of isolation and separateness, yet it permits him to be himself, to retain his integrity.