Free man is by necessity insecure, thinking man by necessity uncertain.

I believe that man is the product of natural evolution that is born from the conflict of being a prisoner and separated from nature, and from the need to find unity and harmony with it.

Today the function of psychiatry, psychology and psychoanalysis threatens to become the tool in the manipulation of man.

There is only one meaning of life: the act of living itself.

I would say, compared with the 19th century, compared with most previous history, this is as good or better a society than any which man has ever made. But that doesn't mean it is such a good one.

. . . freedom to creat and construct, to wonder and to venture. Such freedom requires that the individual be active and responsible, not a slave or a well-fed cog in the machine . . . It is not enough that men are not slaves; if social conditions further the existence of automatons, the result will not be love of life, but love of death.

Education is identical with helping the child realize his potentialities. The opposite of education is manipulation, which is based on the absence of faith in the growth of potentialities and the connection that a child will be right only if the adults put into him what is desirable and suppress what seems to be undesirable.