Feeling Alone Guides The Mind.

Obervation Is A Passive Science, Experimentation Is An Active Science.

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.

The First Entirely Vital Action, So Termed Because It Is Not Effected Outside The Influence Of Life, Consists In The Creation Of The Glycogenic Material In The Living Hepatic Tissue. The Second Entirely Chemical Action, Which Can Be Effected Outside The Influence Of Life, Consists In The Transformation Of The Glycogenic Material Into Sugar By Means Of A Ferment.

In A Word, I Consider Hospitals Only As The Entrance To Scientific Medicine; They Are The First Field Of Observation Which A Physician Enters; But The True Sanctuary Of Medical Science Is A Laboratory; Only There Can He Seek Explanations Of Life In The Normal And Pathological States By Means Of Experimental Analysis.

All The Vital Mechanisms, Varied As They Are, Have Only One Object, That Of Preserving Constant The Conditions Of Life In The Internal Environment.