Pride was the cause of the sin of our first parents. The particular part of their nature of which they were thus proud was the intellect; it was and is the most wonderful of the faculties with which God has endowed man's soul. It was with the forbidden fruit of the tree of knowledge that man, in his pride, desired to glorify his intellect. ‘With this knowledge of the Gods', suggested the Devil, ‘man will really be able to glory in his own nature for he will be the equal to God. The Devil made the false suggestion that knowledge of good and evil would give, would in fact be, a divine wisdom.

But God had not created man so that he should glory in his own created human nature, but only in God's creative nature, his uncreated infinity.