"The greatest good is the knowledge of the union which the mind has with the whole of nature."

"Do not weep; do not wax indignant. Understand."

"Emotion, which is a passion, ceases to be a passion as soon as we form a clear and distinct idea of it."

"The mind's highest good is the knowledge of God, and the mind's highest virtue is to know God."

"Nature has no end in view, and all final causes are nothing but human figments."