It is not the fear of death which creates the desire for immortality, but the desire for immortality which causes the fear of death.

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

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.

Fate determines many things, no matter how we struggle.

There are transitional forms between the metals and non-metals; between chemical combinations and simple mixtures, between animals and plants, between phanerogams and cryptogams, and between mammals and birds [...]. The improbability may henceforth be taken for granted of finding in Nature a sharp cleavage between all that is masculine on the one side and all that is feminine on the other; or that any living being is so simple in this respect that it can be put wholly on one side, or wholly on the other, of the line.

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.

It is not the fear of death which creates the desire for immortality, but the desire for immortality which causes the fear of death.