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

“To explain all nature is too difficult a task for any one man or even for any one age. Tis much better to do a little with certainty & leave the rest for others that come after than to explain all things by conjecture without making sure of any thing.”

“A man may imagine things that are false, but he can only understand things that are true.”

“Sir Isaac Newton was asked how he discovered the law of gravity. He replied, "By thinking about it all the time.”

“You have to make the rules, not follow them”

“If I have ever made any valuable discoveries, it has been due more to patient attention, than to any other talent”

“Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion.”