When You Cannot Measure, Your Knowledge Is

Nothing Can Be More Fatal To Progress Than A Too Confident Reliance On Mathematical Symbols; For The Student Is Only Too Apt To Take The Easier Course, And Consider The Formula Not The Fact As The Physical Reality.

The Life And Soul Of Science Is Its Practical Application, And Just As The Great Advances In Mathematics Have Been Made Through The Desire Of Discovering The Solution Of Problems Which Were Of A Highly Practical Kind In Mathematical Science, So In Physical Science Many Of The Greatest Advances That Have Been Made From The Beginning Of The World To The Present Time Have Been Made In The Earnest Desire To Turn The Knowledge Of The Properties Of Matter To Some Purpose Useful To Mankind.

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

The Fact That Mathematics Does Such A Good Job Of Describing The Universe Is A Mystery That We Don't Understand. And A Debt That We Will Probably Never Be Able To Repay.

I Can Never Satisfy Myself Until I Can Make A Mechanical Model Of A Thing. If I Can Make A Mechanical Model, I Can Understand It. As Long As I Cannot Make A Mechanical Model All The Way Through I Cannot Understand.