Material things have closed boundaries; they are not accessible, cannot be penetrated, by things outside themselves. But one's existence as a spiritual being involves being and remaining oneself and at the same time admitting and transforming into oneself the reality of the world. No other material thing can be present in the space occupied by a house, a tree, or a fountain pen. But where there is mind, the totality of things has room; it is "possible that in a single being the comprehensiveness of the whole universe may dwell.

The common element in all the special forms of contemplation is the loving, yearning, affirming bent toward that happiness which is the same as God Himself, and which is the aim and purpose of all that happens in the world.

No one can obtain felicity by pursuit. This explains why one of the elements of being happy is the feeling that a debt of gratitude is owed, a debt impossible to pay. Now, we do not owe gratitude to ourselves. To be conscious of gratitude is to acknowledge a gift.

[T]o know means to reach the reality of existing things[.]

The brave man uses wrath for his own act, above all in attack, 'for it is peculiar to wrath to pounce upon evil. Thus fortitude and wrath work directly upon each other.

Only those are called liberal or free which are concerned with knowledge; those which are concerned with utilitarian ends... are called servile...The question is... can man develop to the full as a functionary and a worker and nothing else; can a full human existence be contained within an exclusively workaday existence? Stated differently and translated back into our terms: is there such a thing as a liberal art?

Modern religious teaching have little or nothing to say about the place of prudence in life or in the hierarchy of virtues.