I Can At Any Moment Convert My

A Man Who Is Certain He Is Right Is Almost Sure To Be Wrong.

I Have Far More Confidence In The One Man Who Works Mentally And Bodily At A Matter Than In The Six Who Merely Talk About It.

I Cannot Conceive Curved Lines Of Force Without The Conditions Of A Physical Existence In That Intermediate Space.

Ou Can Hardly Imagine How I Am Struggling To Exert My Poetical Ideas Just Now For The Discovery Of Analogies And Remote Figures Respecting The Earth, Sun, And All Sorts Of Things — For I Think That Is The True Way (corrected By Judgment) To Work Out A Discovery.

It Is Right That We Should Stand By And Act On Our Principles; But Not Right To Hold Them In Obstinate Blindness, Or Retain Them When Proved To Be Erroneous.