The celebration of Holy Mass is as valuable as the death of Jesus on the cross.

It is necessary for the perfection of human society that there should be men who devote their lives to contemplation.

Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.

It is not possible to be ignorant of the end of things if we know their beginning.

To live well is to work well, to show a good activity.

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.

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