Mathematics Is The Language With Which God

We See Only The Simple Motion Of Descent, Since That Other Circular One Common To The Earth, The Tower, And Ourselves Remains Imperceptible. There Remains Perceptible To Us Only That Of The Stone, Which Is Not Shared By Us; And, Because Of This, Sense Shows It As By A Straight Line, Always Parallel To The Tower, Which Is Built Upright And Perpendicular Upon The Terrestrial Surface.

To Command Their Professors Of Astronomy To Refute Their Own Observations Is To Command Them Not To See What They Do See And Not To Understand What They Do Understand.

And Who Can Doubt That It Will Lead To The Worst Disorders When Minds Created Free By God Are Compelled To Submit Slavishly To An Outside Will? When We Are Told To Deny Our Senses And Subject Them To The Whim Of Others? When People Devoid Of Whatsoever Competence Are Made Judges Over Experts And Are Granted Authority To Treat Them As They Please? These Are The Novelties Which Are Apt To Bring About The Ruin Of Commonwealths And The Subversion Of The State.

Nature...does Not Act By Means Of Many Things When It Can Do So By Means Of A Few.

The Grand Duke [of Tuscany] ...after Observing The Medicaean Plants Several Times With Me ... Has Now Invited Me To Attach Myself To Him With The Annual Salary Of One Thousand Florins, And With The Title Of Philosopher And Principal Mathematicial To His Highness; Without The Duties Of Office To Perform, But With The Most Complete Leisure; So That I Can Complete My Treatises.