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

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

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