Experiment Is Fundamentally Only Induced Observation.

Well-observed Facts, Though Brought To Light By Passing Theories, Will Never Die; They Are The Material On Which Alone The House Of Science Will At Last Be Built.

The Doubter Is A True Man Of Science: He Doubts Only Himself And His Interpretations, But He Believes In Science.

The Terrain Is Everything; The Germ Is Nothing.

It Is Impossible To Devise An Experiment Without A Preconceived Idea; Devising An Experiment, We Said, Is Putting A Question; We Never Conceive A Question Without An Idea Which Invites An Answer. I Consider It, Therefore, An Absolute Principle That Experiments Must Always Be Devised In View Of A Preconceived Idea, No Matter If The Idea Be Not Very Clear Nor Very Well Defined.

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.