Rudolf Steiner: "Thus man is confronted by the world he sees, senses and studies, and about which he constructs his science. It provides him with the basis for his artistic activities and the grounds for his religious worship. It confronts him; and he stands on the earth, feeling in the depths of his soul: I do not belong to this world; there must be another from whose magic womb I have sprung in my present form. To what world do I belong? This sounds in men's hearts today. It is a comprehensive question; and if men are not satisfied with what the sciences give them, it is because this question is there and the sciences are far from touching it. Where is the world to which man really belongs? — for it is not the visible world."
Source: January 19, 1924. GA 234