Mathematics Is The Key And Door To

Oh, My Dear Kepler, How I Wish That We Could Have One Hearty Laugh Together. Here, At Padua, Is The Principal Professor Of Philosophy, Whom I Have Repeatedly And Urgently Requested To Look At The Moon And Planets Through My Glass, [telescope] Which He Pertinaciously Refuses To Do. Why Are You Not Here? What Shouts Of Laughter We Should Have At This Glorious Folly! And To Hear The Professor Of Philosophy At Pisa Laboring Before The Grand Duke With Logical Arguments, As If With Magical Incantations, To Charm The New Planets Out Of The Sky.

But Let Us Remember That We Are Dealing With Infinities And Indivisibles Both Of Which Transcend Our Finite Understanding, The Former On Account Of Their Magnitude, The Latter Because Of Their Smallness.

In The Long Run My Observations Have Convinced Me That Some Men, Reasoning Preposterously, First Establish Some Conclusion In Their Minds Which, Either Because Of Its Being Their Own Or Because Of Their Having Received It From Some Person Who Has Their Entire Confidence, Impresses Them So Deeply That One Finds It Impossible Ever To Get It Out Of Their Heads.

I Therefore Concluded, And Decided Unhesitatingly, That There Are Three Stars In The Heavens Moving About Jupiter, As Venus And Mercury About The Sun; Which At Length Was Established As Clear As Daylight By Numerous Other Observations.

Two Truths Cannot Contradict One Another.