A thought is often original, though you have uttered it a hundred times. It has come to you over a new route, by a new and express train of associations.

Oliver Wendell Holmes, Sr. (1809-1894) American poet, essayist, scholar

“The Autocrat of the Breakfast Table,” Atlantic Monthly (1857-11)
    (Source)

Collected in The Autocrat of the Breakfast Table, ch. 1 (1858).