Feeling Alone Guides The Mind.

Men Who Have Excessive Faith In Their Theories Or Ideas Are Not Only Ill Prepared For Making Discoveries; They Also Make Very Poor Observations. Of Necessity, They Observe With A Preconceived Idea, And When They Devise An Experiment, They Can See, In Its Results,only A Confirmation Of Their Theory. In This Way They Distort Observation And Often Neglect Very Important Facts Because They Do Not Further Their Aim.

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.

In The Patient Who Succumbed, The Cause Of Death Was Evidently Something Which Was Not Found In The Patient Who Recovered; This Something We Must Determine, And Then We Can Act On The Phenomena Or Recognize And Foresee Them Accurately. But Not By Statistics Shall We Succeed In This; Never Have Statistics Taught Anything, And Never Can They Teach Anything About The Nature Of The Phenomenon.

The Doubter Is A True Man Of Science: He Doubts Only Himself And His Interpretations, But He Believes In Science.

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