"The Lord taught us that no one is able to know God unless taught by God. God cannot be known without the help of God."
"It was by an act of grace that God appeared to Abraham and the other prophets. The eye of Abraham's heart was not the only cause of his seeing God; it was God's grace freely offered to a just man that allowed him to see."
"Our will does not suffice to give us a wholly pure heart. We need God to create such a heart. That is why the one who prays for understanding said:
'Create in me a clean heart O God'."