Logic and ethics are fundamentally the same, they are no more than duty to oneself

No one suffers so much as he [the genius] with the people, and, therefore, for the people, with whom he lives. For, in a certain sense, it is certainly only "by suffering" that a man knows. If compassion is not itself clear, abstractly conceivable or visibly symbolic knowledge, it is, at any rate, the strongest impulse for the acquisition of knowledge. It is only by suffering that the genius understands men. And the genius suffers most because he suffers with and in each and all; but he suffers most through his understanding. . . .

The decision must be made between Judaism and Christianity, between business and culture, between male and female, between the race and the individual, between unworhtiness and worth, between the earthly and the higher life, between negation and God-like. Mankind has the choice to make. There are only two poles, and there is no middle way.

In those rare individual cases where women approach genius they also approach masculinity.

Fate determines many things, no matter how we struggle.

The fixed stars signify the angel in man. That is why man orients himself by them; and that is why women have no appreciation for the starry sky; because they have no sense of the angel in man.

Sending children away to get control of their anger perpetuates the feeling of 'badness" inside them...Chances are they were already feeling not very good about themselves before the outburst and the isolation just serves to confirm in their own minds that they were right.