We should look on man with wonder, conscious that his intellect, being infinite, is the image of the invisible God; and that even if it is for a time limited by the body, as St Basil says, it can embrace all form, just as God’s providence embraces the whole universe. For the intellect has the ability to transform itself into everything, and is dyed with the form of the object it apprehends. But when it is taken up into God, who is formless and imageless, it becomes formless and imageless itself. Then we should marvel at how the intellect can preserve any thought or idea, and how an earlier thought need not be modified by later thoughts, or a later thought injured by earlier ones. On the contrary, the mind like a treasure-house tirelessly stores all thoughts. And these thoughts, whether new or long held in store, the intellect when it wishes can express in language; yet although words are always coming from it, it is never exhausted.
~St Peter of Damaskos
Prayerful Life 