Mathematics Is The Only Good Metaphysics.

Fourier's Theorem Is Not Only One Of The Most Beautiful Results Of Modern Analysis, But It May Be Said To Furnish An Indispensable Instrument In The Treatment Of Nearly Every Recondite Question In Modern Physics.

Ether Is The Only Substance We Are Confident Of In Dynamics. One Thing We Are Sure Of And That Is The Reality And Substantiality Of The Luminferous Ether.

I Have Not Had A Moment's Peace Or Happiness In Respect To Electromagnetic Theory Since November 28, 1846. All This Time I Have Been Liable To Fits Of Ether Dipsomania, Kept Away At Intervals Only By Rigorous Abstention From Thought On The Subject.

It Is Conceivable That Animal Life Might Have The Attribute Of Using The Heat Of Surrounding Matter, At Its Natural Temperature, As A Source Of Energy For Mechanical Effect . . . .the Influence Of Animal Or Vegetable Life On Matter Is Infinitely Beyond The Range Of Any Scientific Enquiry Hitherto Entered On. Its Power Of Directing The Motions Of Moving Particles, In The Demonstrated Daily Miracle Of Our Human Free-will, And In The Growth Of Generation After Generation Of Plants From A Single Seed, Are Infinitely Different From Any Possible Result Of The Fortuitous Concurrence Of Atoms.

I Have No Satisfaction In Formulas Unless I Feel Their Numerical Magnitude.