Well-observed Facts, Though Brought To Light By

We Must Keep Our Freedom Of Mind, ... And Must Believe That In Nature What Is Absurd, According To Our Theories, Is Not Always Impossible.

In Every Enterprise ... The Mind Is Always Reasoning, And, Even When We Seem To Act Without A Motive, An Instinctive Logic Still Directs The Mind. Only We Are Not Aware Of It, Because We Begin By Reasoning Before We Know Or Say That We Are Reasoning, Just As We Begin By Speaking Before We Observe That We Are Speaking, And Just As We Begin By Seeing And Hearing Before We Know What We See Or What We Hear.

A Great Discovery Is A Fact Whose Appearance In Science Gives Rise To Shining Ideas, Whose Light Dispels Many Obscurities And Shows Us New Paths.

Real Science Exists, Then, Only From The Moment When A Phenomenon Is Accurately Defined As To Its Nature And Rigorously Determined In Relation To Its Material Conditions, That Is, When Its Law Is Known. Before That, We Have Only Groping And Empiricism.

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