First Causes Are Outside The Realm Of

We Must Alter Theory To Adapt It To Nature, But Not Nature To Adapt It To Theory.‎

Progress Is Achieved By Exchanging Our Theories For New Ones Which Go Further Than The Old, Until We Find One Based On A Larger Number Of Facts. ... Theories Are Only Hypotheses, Verified By More Or Less Numerous Facts. Those Verified By The Most Facts Are The Best, But Even Then They Are Never Final, Never To Be Absolutely Believed.

Theories Are Like A Stairway; By Climbing, Science Widens Its Horizon More And More, Because Theories Embody And Necessarily Include Proportionately More Facts As They Advance.

The Terrain Is Everything; The Germ Is Nothing.

Hatred Is The Most Clear- Sighted, Next To Genius.