“The soul never thinks without a mental picture.”

“There was never a genius without a tincture of madness…”

“What is a friend? A single soul dwelling in two bodies.”

“Happiness is a quality of the soul...not a function of one's material circumstances.”

“These virtues are formed in man by his doing the actions ... The good of man is a working of the soul in the way of excellence in a complete life.”

“The female is, as it were, a mutilated male, and the catamenia are semen, only not pure; for there is only one thing they have not in them, the principle of soul.”

“Educating the mind without educating the heart is no education at all.”