See Now The Power Of Truth.

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

See Now The Power Of Truth; The Same Experiment Which At First Glance Seemed To Show One Thing, When More Carefully Examined, Assures Us Of The Contrary.

Philosophy [nature] Is Written In That Great Book Which Ever Is Before Our Eyes -- I Mean The Universe -- But We Cannot Understand It If We Do Not First Learn The Language And Grasp The Symbols In Which It Is Written. The Book Is Written In Mathematical Language, And The Symbols Are Triangles, Circles And Other Geometrical Figures, Without Whose Help It Is Impossible To Comprehend A Single Word Of It; Without Which One Wanders In Vain Through A Dark Labyrinth.

Philosophy Itself Cannot But Benefit From Our Disputes, For If Our Conceptions Prove True, New Achievements Will Be Made; If False, Their Refutation Will Further Confirm The Original Doctrines.

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.