Feeling Alone Guides The Mind.

Men Who Have Excessive Faith In Their Theories Or Ideas Are Not Only Ill Prepared For Making Discoveries; They Also Make Very Poor Observations. Of Necessity, They Observe With A Preconceived Idea, And When They Devise An Experiment, They Can See, In Its Results,only A Confirmation Of Their Theory. In This Way They Distort Observation And Often Neglect Very Important Facts Because They Do Not Further Their Aim.

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 Believe Too Firmly In Their Theories, Do Not Believe Enough In The Theories Of Others. So ... These Despisers Of Their Fellows ... Make Experiments Only To Destroy A Theory, Instead Of To Seek The Truth.

A Discovery Is Generally An Unforeseen Relation Not Included In Theory.

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.