Knowing Thyself, That Is The Greatest Wisdom.

The Sun, With All Those Planets Revolving Around It And Dependent On It, Can Still Ripen A Bunch Of Grapes As If It Had Nothing Else In The Universe To Do.

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.

I Have Been Judged Vehemently Suspect Of Heresy, That Is, Of Having Held And Believed That The Sun In The Centre Of The Universe And Immoveable, And That The Earth Is Not At The Center Of Same, And That It Does Move. Wishing However, To Remove From The Minds Of Your Eminences And All Faithful Christians This Vehement Suspicion Reasonably Conceived Against Me, I Abjure With A Sincere Heart And Unfeigned Faith, I Curse And Detest The Said Errors And Heresies, And Generally All And Every Error, Heresy, And Sect Contrary To The Holy Catholic Church. (quoted In Shea And Artigas 194)

In Questions Of Science, The Authority Of A Thousand Is Not Worth The Humble Reasoning Of A Single Individual.

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.