Art Is 'i'; Science Is 'we'.

Il Ne Fallait Jamais Faire Des Expériences Pour Confirmer Ses Idées, Mais Simplement Pour Les Contrôler. We Must Never Make Experiments To Confirm Our Ideas, But Simply To Control Them.

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.

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.

Our Ideas Are Only Intellectual Instruments Which We Use To Break Into Phenomena; We Must Change Them When They Have Served Their Purpose, As We Change A Blunt Lancet That We Have Used Long Enough.

A Fact In Itself Is Nothing. It Is Valuable Only For The Idea Attached To It, Or For The Proof Which It Furnishes.