Humor is a means of obtaining pleasure in spite of the distressing effects that interface with it.

[The child] takes his play very seriously and he expends large amounts of emotion on it. The opposite of play is not what is serious but what is real.

In the last analysis the entire field of psychology may reduce to biological electrochemistry.

The first human who hurled an insult instead of a stone was the founder of civilization.

No other technique for the conduct of life attaches the individual so firmly to reality as laying emphasis on work; for his work at least gives him a secure place in a portion of reality, in the human community.

A lady once expressed herself in society - the very words show that they were uttered with fervour and under the pressure of a great many secret emotions: "Yes, a woman must be pretty if she is to please the men. A man is much better off. As long as he has five straight limbs, he needs no more!"

A strong egoism is a protection against disease, but in the last resort we must begin to love in order that we may not fall ill, and must fall ill if, in consequence of frustration, we cannot love.