We Achieve More Than We Know. We

Mediocre Men Often Have The Most Acquired Knowledge. It Is In The Darker. It Is In The Darker Regions Of Science That Great Men Are Recognized; They Are Marked By Ideas Which Light Up Phenomena Hitherto Obscure And Carry Science Forward.

A Great Discovery Is A Fact Whose Appearance In Science Gives Rise To Shining Ideas, Whose Light Dispels Many Obscurities And Shows Us New Paths.

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.

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.

The Constancy Of The Internal Environment Is The Condition For Free And Independent Life: The Mechanism That Makes It Possible Is That Which Assured The Maintenance, With The Internal Environment, Of All The Conditions Necessary For The Life Of The Elements.