There Is Nothing In Science Which Teaches

When You Are Face To Face With A Difficulty, You Are Up Against A Discovery.

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

I Often Say That When You Can Measure What You Are Speaking About, And Express It In Numbers, You Know Something About It; But When You Cannot Measure It, When You Cannot Express It In Numbers, Your Knowledge Is Of A Meagre And Unsatisfactory Kind.

Quaternions Came From Hamilton After His Really Good Work Had Been Done, And Though Beautifully Ingenious, Have Been An Unmixed Evil To Those Who Have Touched Them In Any Way.

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.