Science Does Not Permit Exceptions.

Real Science Exists, Then, Only From The Moment When A Phenomenon Is Accurately Defined As To Its Nature And Rigorously Determined In Relation To Its Material Conditions, That Is, When Its Law Is Known. Before That, We Have Only Groping And Empiricism.

In These Researches I Followed The Principles Of The Experimental Method That We Have Established, I.e., That, In Presence Of A Well-noted, New Fact Which Contradicts A Theory, Instead Of Keeping The Theory And Abandoning The Fact, I Should Keep And Study The Fact, And I Hastened To Give Up The Theory.

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.

In Science, The Best Precept Is To Alter And Exchange Our Ideas As Fast As Science Moves Ahead.

Descriptive Anatomy Is To Physiology What Geography Is To History, And Just As It Is Not Enough To Know The Typography Of A Country To Understand Its History, So Also It Is Not Enough To Know The Anatomy Of Organs To Understand Their Functions.