“Evil cannot perish without the destruction of much that lives by the evil, and it is no less destruction even if we personally are saved the pain of a sensational act of violence.”

Harvard University address (1978)
Context: Even if we are spared destruction by war, our lives will have to change if we want to save life from self-destruction. We cannot avoid revising the fundamental definitions of human life and human society. Is it true that man is above everything? Is there no Superior Spirit above him? Is it right that man's life and society's activities have to be determined by material expansion in the first place? Is it permissible to promote such expansion to the detriment of our spiritual integrity?
If the world has not come to its end, it has approached a major turn in history, equal in importance to the turn from the Middle Ages to the Renaissance. It will exact from us a spiritual upsurge, we shall have to rise to a new height of vision, to a new level of life where our physical nature will not be cursed as in the Middle Ages, but, even more importantly, our spiritual being will not be trampled upon as in the Modern era.
This ascension will be similar to climbing onto the next anthropologic stage. No one on earth has any other way left but — upward.

The Secret of Efficient Expression (1911)

Source: Chapter 1: The Misanthropic Argument for Anti-natalism https://books.google.com/books?id=J6dBCgAAQBAJ&lpg=PA44&pg=PA55#v=onepage&q&f=false, 2015, p. 55
Source: Permissible Progeny? The Morality of Procreation and Parenting (2015)

Address at a press conference, as quoted in "Mubarak : Arabs to fight 'scourge of terrorism'" at CNN (3 June 2003)

p, 125
Spiritualism and the Christian Faith (1918)

Source: Antigone, Lines 620-3

De Potentia (On Power) q. 3, art. 6, ad 4

Source: Black Theology and Black Power (1969), p. 143

Source: The Tales of Alvin Maker, Seventh Son (1987), Chapter 10.