Tact is the art of making a point without making an enemy. - Isaac Newton

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

"Errors are not in the art but in the artificers."

"Nature is pleased with simplicity. And nature is no dummy"

"If I have seen further than others, it is by standing upon the shoulders of giants."

"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."