Richard Von Krafft-Ebing said this quote

How deep congenital sex-inversion roots may be gathered from the fact that the pleasure-dream of the male Urning has to do with male persons, and of the female with females.

~ Richard Von Krafft-Ebing

I have fooled life and life has fooled me. We are quits. I say good-bye. Think sometimes in the hour of happiness of your poor, comical fool who loved you truly and so well.

~ Richard Von Krafft-Ebing

Nature has made a mistake in the choice of my sexuality and I must do a life-long penance for it, for the moral power to suffer the unavoidable with dignity is lost.

~ Richard Von Krafft-Ebing

He soon recognized the fact that the stimulus proceeded from the idea to be in the power of a woman rather than from the act of violence itself.

~ Richard Von Krafft-Ebing