1. “If I have seen further, it is by standing on the shoulders of giants.”

2. “To every action there is always opposed an equal reaction.”

3. “I can calculate the motion of heavenly bodies, but not the madness of people.”

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

5. “We build too many walls and not enough bridges.”

6. “What goes up must come down.”

7. “Tact is the art of making a point without making an enemy.”

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

9. “No great discovery was ever made without a bold guess.”

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

11. “The more time and devotion one spends in the worship of false gods, the less he is able to spend in that of the True One.”

12. “Live your life as an Exclamation rather than an Explanation.”

13. “Nature is pleased with simplicity. And nature is no dummy.”

14. “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 seashore.”

15. “Errors are not in the art but in the artificers.”

16. “Genius is patience.”

17. “The description of right lines and circles, upon which geometry is founded, belongs to mechanics.”

18. “To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me.”