Therefore to the same natural effects we must, as far as possible, assign the same causes.

I can measure the motion of bodies but I cannot measure human folly.

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

Yet one thing secures us what ever betide, the scriptures assures us that the Lord will provide.

To derive two or three general Principles of Motion from Phænomena, and afterwards to tell us how the Properties and Actions of all corporeal Things follow from those manifest Principles, would be a very great step in Philosophy.

If I had stayed for other people to make my tools and things for me, I had never made anything.

This Excellent Mathematician having given us, in the Transactions of February last, an account of the cause, which induced him to think upon Reflecting Telescopes, instead of Refracting ones, hath thereupon presented the curious world with an Essay of what may be performed by such Telescopes; by which it is found, that Telescopical Tubes may be considerably shortened without prejudice to their magnifiying effect. On his invention of the catadioptrical telescope, as he communicated to the Royal Society.