"their [the Turks and the blacks] nature is like the nature of mute animals, and according to my opinion they are not on the level of human beings."

"The man who is perfect in his knowledge of God is he who has attained to the knowledge of all things that exist."

"The world is a ladder, and man is at the bottom. He can ascend, or he can descend."

"The true perfection of man is to attain to the knowledge of God."

"As for Gentiles with whom we are not at war… their death must not be caused, but it is forbidden to save them if they are at the point of death; if, for example, one of them is seen falling into the s…"