Intellectual adherence is never owed to anything whatsoever, for it is never in any degree a voluntary thing. Attention alone is voluntary. It alone forms the subject of an obligation.

In the intellectual order, the virtue of humility is nothing more nor less than the power of attention.

We have to try to cure our faults by attention and not by will.

The supernatural virtue of justice consists of behaving exactly as though there were equality when one is the stronger in an unequal relationship.

Truth is one, but error is manifold.

To claim that theft or adultery or lying are "evil" simply reflects our degraded idea of good-—that it has something to do with respect for property, respectability, and sincerity.

The apprehension of necessity is an imitation of creation.