A book is made better by good readers and clearer by good opponents.

Thinking evil is making evil.

Compulsion precedes morality, indeed morality itself is compulsion for a time, to which one submits for the avoidance of pain.

What the sense feeleth, what the spirit discerneth, hath never its end in itself. But sense and spirit would fain persuade thee that they are the end of all things: so vain are they.

Every attainment, every step forward in knowledge, follows from courage, from hardness against oneself, from cleanliness in relation to oneself.

Generally speaking, the greater a woman's beauty, the greater her modesty.

Let us guard against saying that there are laws in nature. There are merely necessities: there is no one who commands, no one whoobeys, no one who transgresses. Once you understand that there are no purposes, then you also understand that nothing is accidental: for it is only in a world of purposes that the word "accident" makes sense.