If I have seen a little further it is by standing on the shoulders of Giants.
~ in a letter to Robert Hooke dated February 5, 1676
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 seashore, 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.