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 JungThere is, however, a strong empirical reason why we should cultivate thoughts that can never be proved. It is that they are known to be useful. Man positively needs general ideas & convictions that will give a meaning to his life & enable him to find a place for himself in the universe. He can stand the most incredible hardships when he is convinced that they make sense; he is crushed when on top of all his misfortunes, he has to admit that he is taking part in a ‘tale told by an idiot.’
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