Impressed Force Is The Action Exerted On

Every Particle Of Matter Is Attracted By Or Gravitates To Every Other Particle Of Matter With A Force Inversely Proportional To The Squares Of Their Distances.

No Great Discovery Was Ever Made Without A Bold Guess.

To Arrive At The Simplest Truth Requires Years Of Contemplation.

To Every Action There Is Always Opposed An Equal Reaction.

From What Has Been Said It Is Also Evident, That The Whiteness Of The Sun's Light Is Compounded All The Colours Wherewith The Several Sorts Of Rays Whereof That Light Consists, When By Their Several Refrangibilities They Are Separated From One Another, Do Tinge Paper Or Any Other White Body Whereon They Fall. For Those Colours ... Are Unchangeable, And Whenever All Those Rays With Those Their Colours Are Mix'd Again, They Reproduce The Same White Light As Before.