Since psyche and matter are contained in one and the same world, and moreover are in continuous contact with one another and ultimately rest on irrepresentable, transcendental factors, it is not only possible but fairly probable, even, that psyche and matter are two different aspects of the same thing.
Carl JungAn old man who cannot bid farewell to life appears as feeble and sickly as the young man who is unable to embrace it.
Carl Jung