Man is a composite being, made up of an earthly body and celestial soul... The soul is closely united with the body, yet wholly independent of it.
Man is not only reason but also heart. The powers of these two centers, mutually assisting one another, render man perfect and teach him what he could never learn through reason alone. If reason teaches about the natural world, the heart teaches us about the supernatural world... Man is perfect when he has developed both his heart and his intellect. Now the heart is developed through revealed religion.
Saint Nektarios of Aegina