In the common-sense view, to be sure, knowledge belongs to the man who has no further need to learn because he has finished learning. No, only that man is knowing who understands that he must keep learning over and over again and who above all, on the basis of this understanding, has attained to the point where he is always able to learn. This is much more difficult than to possess information.
(Heidegger, An Introduction to Metaphysics, translated
by Ralph Manheim, Yale University Press, 1987)