"He who thinks that he can attain the perfection of man without the help of God, errs greatly."

"The ultimate perfection of man is to become a pure intellect, and to resemble God in this respect."

"The human body is a tool for the soul, and it should be kept in good condition."

"The human mind is capable of understanding all things."

"A man should always consider himself as half meritorious and half guilty."