"The ultimate source of our civilization's disease is the spiritual and religious crisis which has overtaken all of us and which each must master for himself. Above all, man is Homo religiosus, and yet we have, for the past century, made the desperate attempt to get along without God, and in the place of God we have set up the cult of man, his profane or even ungodly science and art, his technical achievements, and his State. We may be certain that some day the whole world will come to see, in a blinding flash, what is now clear to only a few, namely, that this desperate attempt has created a situation in which man can have no spiritual and moral life, and this means that he cannot live at all for any length of time, in spite of television and speedways and holiday trips and comfortable apartments. We seem to have proved the existence of God in yet another way: by the practical consequences of His assumed non-existence."