Nature Is Written In Mathematical Language.

In Regard To The Philosophers, If They Be True Philosophers, I.e., Lovers Of Truth, They Should Not Be Irritated That The Earth Moves. Rather, If They Realize That They Have Held A False Belief, They Should Thank Those Have Shown Them The Truth; And If Their Opinion Stands Firm That The Earth Doesn't Move, They Will Have Reason To Boast Than Be Angered.

I Am Certainly Interested In A Tribunal In Which, For Having Used My Reason, I Was Deemed Little Less Than A Heretic. Who Knows But Men Will Reduce Me From The Profession Of A Philosopher To That Of Historian Of The Inquisition!

Among The Great Men Who Have Philosophized About [the Action Of The Tides], The One Who Surprised Me Most Is Kepler. He Was A Person Of Independent Genius, [but He] Became Interested In The Action Of The Moon On The Water, And In Other Occult Phenomena, And Similar Childishness.

In The Sciences, The Authority Of Thousands Of Opinions Is Not Worth As Much As One Tiny Spark Of Reason In An Individual Man.

We Must Say That There Are As Many Squares As There Are Numbers.