Sometimes it happens that a man's circle of horizon becomes smaller and smaller, and as the radius approaches zero it concentrates on one point. And then that becomes his point of view.
David HilbertWir mussen wissen. Wir werden wissen. We must know. We will know. Inscribed on his tomb in Gilttingen.
David HilbertMathematics is a game played according to certain simple rules with meaningless marks on paper.
David Hilbert