"The intellectual honesty of the author makes us share the inner struggle in his mind. It is this that is the mark of the born teacher. Knowledge exists in two forms--lifeless, stored in books, and alive in the consciousness of men. The second form of existence is after all the essential one; the first, indispensable as it may be, occupies only an inferior position."
p.80, IDEAS AND OPINIONS, by Albert Einstein (Three Rivers Press, NY: 1954, 1982)