Angels have intelligence and nous, whereas men have reason, both logos and dianoia, nous and sensory perception. This follows the idea that man is a microcosm and an expression of the whole creation or macrocosmos. The human nous was darkened after the Fall of Man (which was the result of the rebellion of reason against the nous),[73] but after the purification (healing or correction) of the nous (achieved through ascetic practices like hesychasm), the human nous (the "eye of the heart") will see God's uncreated Light (and feel God's uncreated love and beauty, at which point the nous will start the unceasing prayer of the heart) and become illuminated, allowing the person to become an orthodox theologian.[66][74][75]