There is no less invention in aptly applying a thought found in a book, than in being the first author of the thought.

He that condescended so far, and stooped so low, to invite and bring us to heaven, will not refuse us a gracious reception there.

I am not ambitious to appear a man of letters: I could be content the world should think I had scarce looked upon any other book than that of nature.

The inspired and expired air may be sometimes very useful, by condensing and cooling the blood that passeth through the lungs; I hold that the depuration of the blood in that passage, is not only one of the ordinary, but one of the principal uses of respiration.

Nature always looks out for the preservation of the universe.

God may rationally be supposed to have framed so great and admirable an automaton as the world for special ends and purposes.

Darkness, that here surrounds our purblind understanding, will vanish at the dawning of eternal day.