Light for some time to come will have to be called darkness.

The happiness of man is: I will. The happiness of woman is: he wills. 'Behold , just now the world ... entire love. And woman must obey and find a depth for her surface. Surface is the disposition of woman: a mobile, stormy film over shallow water. Man's disposition, however, is deep; his river roars in subterranean caves: woman feels his strength but does not comprehend it.

Men inadvertently comport themselves with nobility when they have grown accustomed to wanting nothing from others and always giving to them.

Invisible threads are the strongest ties.

A sure way to irritate people and to put evil thoughts into their heads is to keep them waiting a long time. This makes them immoral.

With the unknown, one is confronted with danger, discomfort, and care; the first instinct is to abolish these painful states. First principle: any explanation is better than none. . . . The causal instinct is thus conditional upon, and excited by, the feeling of fear. The "why?" shall, if at all possible, not give the cause for its own sake so much as for a particular kind of cause -- a cause that is comforting, liberating, and relieving.

...the only psychologist from whom I have anything to learn.