Henry David Thoreau Quote
I think it will be found that he who speaks with most authority on a given subject is not ignorant of what has been said by his predecessors. He will take his place in a regular order, and substantially add his own knowledge to the knowledge of previous generations.
Journal, ed. by B. Torrey, 1837-1846, 1850-Nov. 3, 1861 (ed. 1906)