He who cannot obey himself will be commanded. That is the nature of living creatures.

This mother needs happy, reputable children, and that one needs unhappy ones: otherwise she cannot show her kindness as a mother.

A bad conscience is easier to cope with than a bad reputation.

Whenever the truth is uncovered, the artist will always cling with rapt gaze to what still remains covering even after such uncovering; but the theoretical man enjoys and finds satisfaction in the discarded covering and finds the highest object of his pleasure in the process of an ever happy uncovering that succeeds through his own efforts.

There is perhaps nothing so admirable in Christianity and Buddhism as their art of teaching even the lowest to elevate themselves by piety to a seemingly higher order of things, and thereby to retain their satisfaction with the actual world in which they find it difficult enough to live - this very difficulty being necessary.

What do we have in common with the rosebud, which trembles because a drop of dew lies on its body?

We must be physicists in order to be creative since so far codes of values and ideals have been constructed in ignorance of physics or even in contradiction to physics.