Those Who Do Not Know

Our Ideas Are Only Intellectual Instruments Which We Use To Break Into Phenomena; We Must Change Them When They Have Served Their Purpose, As We Change A Blunt Lancet That We Have Used Long Enough.

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

Descriptive Anatomy Is To Physiology What Geography Is To History, And Just As It Is Not Enough To Know The Typography Of A Country To Understand Its History, So Also It Is Not Enough To Know The Anatomy Of Organs To Understand Their Functions.

The Joy Of Discovery Is Certainly The Liveliest That The Mind Of Man Can Ever Feel.

Those Who Do Not Know The Torment Of The Unknown Cannot Have The Joy Of Discovery.