Hypotheses non fingo. I frame no hypotheses.

You ask me how, with so much study, I manage to retene my health. Morpheus is my last companion; without 8 or 9 hours of him yr correspondent is not worth one scavenger's peruke. My practices did at ye first hurt my stomach, but now I eat heartily enou' as y' will see when I come down beside you.

As a blind man has no idea of colors, so we have no idea of the manner by which the all-wise God perceives and understands all things.

Are not gross bodies and light convertible into one another; and may not bodies receive much of their activity from the particles of light which enter into their composition? The changing of bodies into light, and light into bodies, is very conformable to the course of Nature, which seems delighted with transmutations.

...from the same principles, I now demonstrate the frame of the System of the World.

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

We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.