One of the worst forms of mental suffering is boredom, not knowing what to do with oneself and one's life. Even if man had no monetary, or any other reward, he would be eager to spend his energy in some meaningful way because he could not stand the boredom which inactivity produces.

We have a religious renaissance today in America, as many people say. I would say this religious renaissance, ninety percent of it is the greatest danger true religious experience has ever been confronted with.

It doesn't matter whether one uses God or doesn't. What matters is which experience a person has.

Can freedom become a burden, too heavy for man to bear, something he tries to escape from?..Is there not also, perhaps, besides an innate desire for freedom, an instinctive wish for submission?

In erotic love, two people who were separate become one. In motherly love, two people who were one become separate. The mother must not only tolerate, she must wish and support the child's separation.

The history of man is a graveyard of great cultures that came to catastrophic ends because of their incapacity for planned, rational, voluntary reaction to challenge.

The danger of the past was that men became slaves. The danger of the future is that man may become robots.