Hypotheses Non Fingo. I Frame No Hypotheses.

If I Have Ever Made Any Valuable Discoveries, It Has Been Due More To Patient Attention, Than To Any Other Talent

What Descartes Did Was A Good Step. You Have Added Much Several Ways, And Especially In Taking The Colours Of Thin Plates Into Philosophical Consideration. If I Have Seen A Little Further It Is By Standing On The Shoulders Of Giants.

To Every Action There Is Always Opposed An Equal Reaction.

Pictures, Propagated By Motion Along The Fibers Of The Optic Nerves In The Brain, Are The Cause Of Vision.

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.