Mathematics Is The Only Good Metaphysics.

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

At What Time Does The Dissipation Of Energy Begin?

Scientific Wealth Tends To Accumulate According To The Law Of Compound Interest. Every Addition To Knowledge Of The Properties Of Matter Supplies The Physical Scientist With New Instrumental Means For Discovering And Interpreting Phenomena Of Nature, Which In Their Turn Afford Foundations Of Fresh Generalisations, Bringing Gains Of Permanent Value Into The Great Storehouse Of Natural Philosophy.

You Know Only Insofar As You Can Measure.

The Only Census Of The Senses, So Far As I Am Aware, That Ever Before Made Them More Than Five, Was The Irishman's Reckoning Of Seven Senses. I Presume The Irishman's Seventh Sense Was Common Sense; And I Believe That The Possession Of That Virtue By My Countrymen-i Speak As An Irishman.