We Cannot Begin With Complete Doubt.

Consider What Effects That Might Conceivably Have Practical Bearings You Conceive The Objects Of Your Conception To Have. Then, Your Conception Of Those Effects Is The Whole Of Your Conception Of The Object.

It Is Terrible To See How A Single Unclear Idea, A Single Formula Without Meaning, Lurking In A Young Man's Head, Will Sometimes Act Like An Obstruction Of Inert Matter In An Artery, Hindering The Nutrition Of The Brain And Condemning Its Victim To Pine Away In The Fullness Of His Intellectual Vigor And In The Midst Of Intellectual Plenty.

If We Are To Define Science, ... It Does Not Consist So Much In Knowing, Nor Even In "organized Knowledge," As It Does In Diligent Inquiry Into Truth For Truth's Sake, Without Any Sort Of Axe To Grind, Nor For The Sake Of The Delight Of Contemplating It, But From An Impulse To Penetrate Into The Reason Of Things.

But The Extraordinary Insight Which Some Persons Are Able To Gain Of Others From Indications So Slight That It Is Difficult To Ascertain What They Are, Is Certainly Rendered More Comprehensible By The View Here Taken.

It Is Not Too Much To Say That Next After The Passion To Learn There Is No Quality So Indispensable To The Successful Prosecutionof Science As Imagination. Find Me A People Whose Early Medicine Is Not Mixed Up With Magic And Incantations, And I Will Find You A People Devoid Of All Scientific Ability.