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

"He who lives under the guidance of reason endeavours, as much as he can, to repay his fellow's hatred, anger, contempt, etc., with love and nobleness."

"The power of the mind over the emotions consists in reason."

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

"The intellectual love of God is eternal, and it is the highest good of the mind."