It Vexes Me When They Would Constrain

And Believe Me, If I Were Again Beginning My Studies, I Should Follow The Advice Of Plato And Start With The Mathematical Sciences, Which Proceed Very Cautiously And Admit Nothing As Established Until It Has Been Rigorously Demonstrated.

The Number Of The Fixed Stars Which Observers Have Been Able To See Without Artificial Powers Of Sight Up To This Day Can Be Counted. It Is Therefore Decidedly A Great Feat To Add To Their Number, And To Set Distinctly Before The Eyes Other Stars In Myriads, Which Have Never Been Seen Before, And Which Surpass The Old, Previously Known Stars In Number More Than Ten Times.

Their Vain Presumption Of Knowing All Can Take Beginning Solely From Their Never Having Known Anything; For If One Has But Once Experienced The Perfect Knowledge Of One Thing, And Truly Tasted What It Is To Know, He Shall Perceive That Of Infinite Other Conclusions He Understands Not So Much As One.

Vision, I Say, Is Related To Light Itself. But Of This Sensation And The Things Pertaining To It, I Pretend To Understand But Little; And Since Even A Long Time Would Not Suffice To Explain That Trifle, Or Even To Hint At An Explanation, I Pass Over This In Silence.

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.