Isaac Newton

Isaac Newton (1642-1727) was an English physicist and mathematician. One of his most famous accomplishments was formulating the theory of gravity.

He is also known for his quote:


 * "For every action, there is an equal and opposite reaction."

This quote lead Romana to believe that Newton invented punting. (DW: The Five Doctors)

The Doctor once claimed that he sat in Newton's tree dropping apples onto his head, then explained gravity to him over dinner. (DW: The Pirate Planet)