We shall never learn to know ourselves except by endeavoring to know God; for, beholding His greatness we realize our own littleness; His purity shows us our foulness; and by meditating upon His humility we find how very far we are from being humble.

First Mansions, Ch. 2 : The Human Soul, as translated by the Benedictines of Stanbrook (1911), revised and edited by Fr. Benedict Zimmerman - Interior Castle (1577)