If... the motion of the earth were circular, it would be violent and contrary to nature, and could not be eternal, since ... nothing violent is eternal .... It follows, therefore, that the earth is not moved with a circular motion.

The human mind may perceive truth only through thinking, as is clear from Augustine.

A person is disposed to an act of choice by an angel ... in two ways. Sometimes, a man's understanding is enlightened by an angel to know what is good, but it is not instructed as to the reason why ... But sometimes he is instructed by angelic illumination, both that this act is good and as to the reason why it is good.

Do not wish to jump immediately from the streams to the sea, because one has to go through easier things to the more difficult.

If you can live amid injustice without anger, you are immoral as well as unjust.

Justice is a certain rectitude of mind whereby a man does what he ought to do in the circumstances confronting him.

Characteristics which define beauty are wholeness, harmony and radiance.