I Know That I Exist; The Question

Thus Each Truth Discovered Was A Rule Available In The Discovery Of Subsequent Ones.

We Never Understand A Thing So Well,and Make It Our Own, As When We Have Discovered It For Ourselves.

If We Possessed A Thorough Knowledge Of All The Parts Of The Seed Of Any Animal (e.g. Man), We Could From That Alone, Be Reasons Entirely Mathematical And Certain, Deduce The Whole Conformation And Figure Of Each Of Its Members, And, Conversely If We Knew Several Peculiarities Of This Conformation, We Would From Those Deduce The Nature Of Its Seed.

Divide Each Difficulty Into As Many Parts As Is Feasible And Necessary To Resolve It.

Human Wisdom Remains Always One And The Same Although Applied To The Most Diverse Objects And It Is No More Changed By Their Diversity Than The Sunshine Is Changed By The Variety Of Objects Which It Illuminates.