According to theologians, noetic, pure, angelic prayer is in its power wisdom inspired by the Holy Spirit. - Gregory of Sinai

The short ladder of spiritual progress – which is at the same time both small and great – has five rungs leading to perfection.

The energy of grace is the power of spiritual fire that fills the heart with joy and gladness, stabilizes, warms and purifies the soul, temporarily stills our provocative thoughts, and for a time suspends the body's impulsions. The signs and fruits that testify to its authenticity are tears, contrition, humility, self-control, silence, patience, self-effacement and similar qualities, all of which constitute undeniable evidence of its presence.

A divine philosopher is he who through ascetic purification and noetic contemplation has achieved a direct union with God, and is a true friend of God, in that he esteems and loves the supreme, creative and true wisdom above every other love, wisdom and knowledge.