Isaac Newton

I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary, whilst the great ocean of truth lay all undiscovered before me. - Isaac Newton

If I have seen a little farther it is by standing on the shoulders of Giants. (paraphrasing of Bernard of Chartres) - Sir Isaac Newton