What I am calling the moment was in fact conceived by Kierkegaard for the very first time in philosophy. This idea makes it possible to start the first completely new era of philosophy since antiquity.
Everyone carries a room about inside him. This fact can even be proved by means of the sense of hearing. If someone walks fast and one pricks up one's ears and listens, say in the night, when everything round about is quiet, one hears, for instance, the rattling of a mirror not quite firmly fastened to the wall.