To Measure Is To Know.

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.

When You Can Measure What You Are Speaking About, And Express It In Numbers, You Know Something About It.

The Vortex Theory [of The Atom] Is Only A Dream. Itself Unproven, It Can Prove Nothing, And Any Speculations Founded Upon It Are Mere Dreams About Dreams.

We Only Know God In His Works, But We Are Forced By Science To Admit And To Believe With Absolute Confidence In A Directive Power-in An Influence Other Than Physical, Or Dynamical, Or Electrical Forces.

Although Mechanical Energy Is Indestructible, There Is A Universal Tendency To Its Dissipation, Which Produces Throughout The System A Gradual Augmentation And Diffusion Of Heat, Cessation Of Motion And Exhaustion Of The Potential Energy Of The Material Universe