All The Evolution We Know

If We Are To Define Science, ... It Does Not Consist So Much In Knowing, Nor Even In "organized Knowledge," As It Does In Diligent Inquiry Into Truth For Truth's Sake, Without Any Sort Of Axe To Grind, Nor For The Sake Of The Delight Of Contemplating It, But From An Impulse To Penetrate Into The Reason Of Things.

The Entire Universe Is Perfused With Signs, If It Is Not Composed Exclusively Of Signs.

Doubt Is An Uneasy And Dissatisfied State From Which We Struggle To Free Ourselves And Pass Into The State Of Belief; While The Latter Is A Calm And Satisfactory State Which We Do Not Wish To Avoid, Or To Change To A Belief In Anything Else.

A Hypothesis Is Something Which Looks As If It Might Be True And Were True, And Which Is Capable Of Verification Or Refutation By Comparison With Facts.

The Opinion Which Is Fated To Be Ultimately Agreed To By All Who Investigate, Is What We Mean By The Truth, And The Object Represented In This Opinion Is The Real. That Is The Way I Would Explain Reality.