“Whosoever seeks the truth will not proceed by studying the writings of his predecessors and by simply accepting his own good opinion of them. Whosoever studies works of science must, if he wants to find the truth, transform himself into a critic of everything he reads.”
He must examine tests and explanations with the greatest precision and question them from all angles and aspects.
Ehsan Masood, Science and Islam https://www.amazon.com/Science-Islam-History-Icon/dp/1785782029/ref=sr_1_3?s=books&ie=UTF8&qid=1544708566&sr=1-3&keywords=ehsan+masood p: 169
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Alhazen 5
Arab physicist, mathematician and astronomer 965–1038Related quotes

The History of the World (1614), Preface

Of mathematics — as quoted in Mathematics: The Loss of Certainty (1980) by Morris Kline, p. 99.

Alhazen, quoted in “Muslim Journeys.” Bridging Cultures Bookshelf: Muslim Journeys. N.p., n.d. Web. 01 Nov. 2013. Also in Ibn al-Haytham Brief life of an Arab mathematician: died circa 1040 (September-October 2003) http://harvardmagazine.com/2003/09/ibn-al-haytham-html

Persecution and Tolerance, Hulsean Lectures, University of Cambridge (Winter 1893–94)
Sermon (1899)

Source: The Autobiography, P. 31

Kirchner; as quoted in Ernst Ludwig Kirchner: ein Künstlerleben in Selbstzeugnissen, Andreas Gabelmann (Claire Louise Albiez, translation); Hatje Cantz Verlag, Ostfildern, Germany 2010, p. 28
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