"True, in the individual, plant or animal, there are many potentialities frustrate and made void. That is neither here nor there in philosophy. Philosophy deals not with individuals but with species; not with Bucephalus or Alexander, but with horse, man. Enough that one seed ever germinates, and that all normal specimens are apt to do the like, meeting with proper environment." -- Ethics and Natural Law, p. 17.
Of God and His Creatures: 3.157