Galileo Galilei Quotes About Observation

Quotes about: Observation

• To command their professors of astronomy to refute their own observations is to command them not to see what they do see and not to understand what they do understand.

  Galileo Galilei

  Religion, Atheism, Astronomy

• I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see for myself at any time by means of experiment. Witnesses are examined in doutbful matters which are past and transient, not in those which are actual and present. A judge must seek by means of witnesses to determine whether Peter injured John last night, but not whether John was injured, since the judge can see that for himself.

  Galileo Galilei

  Truth, Mean, Science

• I therefore concluded, and decided unhesitatingly, that there are three stars in the heavens moving about Jupiter, as Venus and Mercury about the Sun; which at length was established as clear as daylight by numerous other observations.

  Galileo Galilei

  Stars, Moving, Science

  "The English Renaissance: An Anthology of Sources and Document". Book by Kate Aughterson (p. 383), June 1, 2002.

• In the long run my observations have convinced me that some men, reasoning preposterously, first establish some conclusion in their minds which, either because of its being their own or because of their having received it from some person who has their entire confidence, impresses them so deeply that one finds it impossible ever to get it out of their heads.

  Galileo Galilei

  Running, Men, Long

  "Dialogue Concerning the Two Chief World Systems". Book by Galileo Galilei (p. 322), 1632.

• They who depend upon manifest observations will philosophize better than those who persist in opinions repugnant to the senses.

  Galileo Galilei

  Opinion, Observation, Manifest

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