Even If I Were To Suppose That

The Rainbow Is Such A Remarkable Phenomenon Of Nature, And Its Cause Has Been So Meticulously Sought After By Inquiring Minds Throughout The Ages, That I Could Not Choose A More Appropriate Subject For Demonstrating How, With The Method I Am Using, We Can Arrive At Knowledge Not Possessed At All By Those Whose Writings Are Available To Us.

This Result Could Have Been Achieved Either By His [god] Endowing My Intellect With A Clear And Distinct Perception Of Everything About Which I Would Ever Deliberate, Or Simply By Impressing The Following Rule So Firmly Upon My Memory That I Could Never Forget It: I Should Never Judge Anything That I Do Not Clearly And Distinctly Understand.

Science Is Practical Philosophy.

Even The Mind Depends So Much On Temperament And The Disposition Of One's Bodily Organs That, If It Is Possible To Find A Way To Make People Generally More Wise And More Skilful Than They Have Been In The Past, I Believe That We Should Look For It In Medicine. It Is True That Medicine As It Is Currently Practiced Contains Little Of Much Use.

There Is Nothing So Strange And So Unbelievable That It Has Not Been Said By One Philosopher Or Another.