The Doubter Is A True Man Of

In The Philosophic Sense, Observation Shows And Experiment Teaches.

The Mental Never Influences The Physical. It Is Always The Physical That Modifies The Mental, And When We Think That The Mind Is Diseased, It Is Always An Illusion.

The Fact That Knowledge Endlessly Recedes As The Investigator Is About To Grasp It Is What Constitutes At The Same Time His Torment And Happiness.

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

The Great Experimental Principle, Then, Is Doubt, That Philosophic Doubt Which Leaves To The Mind Its Freedom And Initiative, And From Which The Virtues Most Valuable To Investigators In Physiology And Medicine Are Derived.