Carl Jung

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 irreprehensible, transcendental factors, it is not only possible but fairly probable, even, that psyche and matter are two different aspects of one and the same thing. The synchronicity phenomena point, it seems to me, in this direction, for they show that the nonpsychic can behave like the psychic, and vice versa, without there being any causal connection between them.