Love for that which is earthly makes the soul empty, and then there she is sad, and grows wild, and does not want to pray to God. The enemy then, seeing that the soul is not in God, shakes her and freely places in the mind whatever he wants, and he drives the soul from one thought to another, and thus the whole day the soul remains in such disorder and cannot purely gaze at the Lord.
— Saint Silouan the Athonite (1866-1938)