"If I am anything, which I highly doubt, it is due to hard work."

"To me there has never been a higher source of earthly honor or distinction than that connected with advances in science."

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

"For the conservation of motion, it is necessary that the body should be moved in a vacuum."

"To explain all nature is too difficult a task for any one man or even for any one age."