Otto Weininger said this quote

No men who really think deeply about women retain a high opinion of them

~ Otto Weininger

The criminal (as slave) often seeks a person of great perfection (and here, as a judge of people's imperfection, the criminal is much harsher than a good man), because he so wants to obtain trust from outside (not through an inner change of mind). If he believes he has found such a person, he gives himself up to him in the most complete slavery, and he searches in an importunate manner for people whom he could serve as a slave. He also wants to live as a slave so as never to be alone.

~ Otto Weininger

Great men have always preferred women of the prostitute type.

~ Otto Weininger

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.

~ Otto Weininger