Blessed is the one who has reached the knowledge that cannot be abolished (beyond what cannot be, it cannot be gone). - Evagrius Ponticus

23. The mind cannot see the place of God within itself, unless it has transcended all the mental representations associated with objects. Nor will it transcend them, if it has not put off the passions that bind it to sensible objects through mental representations. And it will lay aside the passions through the virtues, and simple thoughts through spiritual contemplation; and this in turn it will lay aside when there appears to it the light.

113. By true prayer a monk becomes another angel, for he ardently longs to see the face of the Father in heaven.

70. You will not be able to pray purely if you are all involved with material affairs and agitated with unremitting concerns. For prayer is the rejection of concepts.