When We Meet A Fact Which Contradicts

Tout Est Poison, Rien N'est Poison, Tout Est Une Question De Dose. Everything Is Poisonous, Nothing Is Poisonous, It Is All A Matter Of Dose.

Men Who Have Excessive Faith In Their Theories ... Make Poor Observations, Because They Choose Among The Results Of Their Experiments Only What Suits Their Object, Neglecting Whatever Is Unrelated To It And Carefully Setting Aside Everything Which Might Tend Toward The Idea They Wish To Combat

It Has Often Been Said That, To Make Discoveries, One Must Be Ignorant. This Opinion, Mistaken In Itself, Nevertheless Conceals A Truth. It Means That It Is Better To Know Nothing Than To Keep In Mind Fixed Ideas Based On Theories Whose Confirmation We Constantly Seek, Neglecting Meanwhile Everything That Fails To Agree With Them.

With The Aid Of These Active Experimental Sciences Man Becomes An Inventor Of Phenomena, A Real Foreman Of Creation; And Under This Head We Cannot Set Limits To The Power That He May Gain Over Nature Through Future Progress Of The Experimental Sciences.

[those] Who Have An Excessive Faith In Their Theories Or In Their Ideas Are Not Only Poorly Disposed To Make Discoveries, But They Also Make Very Poor Observations.