Unbelief is the greatest of sins.

Love takes up where knowledge leaves off.

Grace does not destroy nature, it perfects it.

Beware of the person of one book.

God destines us for an end beyond the grasp of reason.

Human salvation demands the divine disclosure of truths surpassing reason.

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.