When two forces unite, their efficiency double.

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.

I am ashamed to tell you to how many figures I carried these calculations [of Pi], having no other business at the time

The qualities of bodies, which admit neither intension nor remission of degrees, and which are found to belong to fill bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.

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

I see I have made my self a slave to Philosophy.

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