The Book Of Nature Is Written In

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.

I, Galileo, Son Of The Late Vicenzo Galilei, Swear That I Never Said That The Prime Numbers Are Useless. What I Said Was That You Cannot Count Lunar Craters By Counting 2, 3, 5, 7.

I Do Not Know What To Say In A Case So Surprising, So Unlooked For And So Novel.

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.

Some, Merely To Contradict What I Had Said, Did Not Scruple To Cast Doubt Upon Things They Had Seen With Their Own Eyes Again And Again.