Man can be conditioned to behave in almost every desired way; but only "almost.

If one admits that the influence of the outside world is essentially beneficial, the lack of such influence during sleep would tend to diminish the value of our dream activity so as to render it inferior to the mental activity that takes place when we are awake, when we are exposed to these beneficial influences of surrounding reality. But how can one say that the influence of reality is exclusively beneficial. Could it not also be damaging, and could its absence not give access to qualities superior to those that we have when awake?

I think American man unconsciously hates his work very often, because he feels trapped by it... imprisoned by it... because he feels that he is spending most of his energy for something which has no meaning in itself.

Love is not primarily a relationship to a specific person; it is an attitude, an ordination of character which determines the relatedness of the person to the whole world as a whole, not toward one object of love

Human history begins with man's act of disobedience which is at the same time the beginning of his freedom and the development of his reason.

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

If you take a salesman, who sells a useless commodity, he feels like a fraud.