Took about 2 minutes to STFW:
"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."
Brewster's Memoirs of Newton. Vol. ii. Chap. xxvii.