“I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration. ... [I]t is not in the power of professors of the demonstrative sciences to alter their opinions at will, so as to be now of one way of thinking and now of another. ... [D]emonstrated conclusions about things in nature of the heavens, do not admit of being altered with the same ease as opinions to what is permissible or not, under a contract, mortgage, or bill of exchange.”
![“I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration. ... [I]t is not in the power of professors of the demonstrative sciences to alter their opinions at will, so as to be…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/c92/galileo-galilei-2377_altered_i-would-beg-the-wise-and-learned-fathers_1856623.jpg)
![“I would beg the wise and learned fathers [of the church] to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration.” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/50e/galileo-galilei-2377_church_i-would-beg-the-wise-and-learned-fathers_652176.jpg)
![“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.” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/96d/galileo-galilei-2377_action_among-the-great-men-who-have-philosophiz_131150.jpg)
![“Geometry, which should only obey Physics, when united with it sometimes commands it. If it happens that the question which we wish to examine is too complicated for all the elements to be able to enter into the analytical comparison we wish to make, we separate the more inconvenient [elements], we…” quote by Jean le Rond d'Alembert](https://sms4smile.com/quotes/img-quotes/0d9/jean-le-rond-d-alembert-26487_able_geometry-which-should-only-obey-physics_6945.jpg)
![“[New York] is a city largely based on great skyscrapers, and they will always be the essence of New York. That won't change, just as the character of the people who live here will not be altered by this tragedy.” quote by Donald Trump](https://sms4smile.com/quotes/img-quotes/4ee/donald-trump-18_altered_new-york-is-a-city-largely-based-on-grea_56730.jpg)
