Measure What Is Measurable, And Make Measurable

But Of All Other Stupendous Inventions, What Sublimity Of Mind Must Have Been His Who Conceived How To Communicate His Most Secret Thoughts To Any Other Person, Though Very Far Distant Either In Time Or Place? And With No Greater Difficulty Than The Various Arrangement Of Two Dozen Little Signs Upon Paper? Let This Be The Seal Of All The Admirable Inventions Of Man.

My Dear Kepler, What Would You Say Of The Learned Here, Who, Replete With The Pertinacity Of The Asp, Have Steadfastly Refused To Cast A Glance Through The Telescope? What Shall We Make Of This? Shall We Laugh, Or Shall We Cry?

I Think That In The Discussion Of Natural Problems We Ought To Begin Not With The Scriptures, But With Experiments, And Demonstrations.

Philosophy Is Written In That Great Book Which Ever Lies Before Our Eyes — I Mean The Universe — But We Cannot Understand It If We Do Not First Learn The Language And Grasp The Symbols, In Which It Is Written.

They Who Depend Upon Manifest Observations Will Philosophize Better Than Those Who Persist In Opinions Repugnant To The Senses.