Gravity explains the motions of the planets, but it cannot e... - 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."

"Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things."

"What goes up must come down."

"My powers are ordinary. Only my application brings me success."

"Tact is the art of making a point without making an enemy."