Roger Bacon (1220–1292) medieval philosopher and theologian
Cited in: Carol A. Dingle (2000) Memorable Quotations: Philosophers of Western Civilization. p. 21
Letter to the Grand Duchess Christina (1615)
Roger Bacon (1220–1292) medieval philosopher and theologian
Cited in: Carol A. Dingle (2000) Memorable Quotations: Philosophers of Western Civilization. p. 21
Edgar Guest (1881–1959) American writer
Source: The Path to Home (1919), p.130 - Lost Opportunities, stanzas 2 and 3.
Muhammad al-Baqir (677–733) fifth of the Twelve Shia Imams
Muhammad Kulayni, Usūl al-Kāfī, vol.2, p. 234
G. K. Chesterton (1874–1936) English mystery novelist and Christian apologist
On William Makepeace Thackeray Ch. II: The Great Victorian Novelists (p. 65)
The Victorian Age in Literature (1913)
Charles Grey, 2nd Earl Grey (1764–1845) Prime Minister of the United Kingdom of Great Britain and Ireland
Lieutenant-General Hon. C. Grey, Some Account of the Life and Opinions of Charles, Second Earl Grey (London: Richard Bentley, 1861), pp. 10-11.
1830s
Maurizio Viroli (1952) Italian essayist and philosopher
Preface
Machiavelli’s God (2011)
Karl Popper (1902–1994) Austrian-British philosopher of science
"On Freedom" in All Life is Problem Solving (1999)
Context: When I speak of reason or rationalism, all I mean is the conviction that we can learn through criticism of our mistakes and errors, especially through criticism by others, and eventually also through self-criticism. A rationalist is simply someone for whom it is more important to learn than to be proved right; someone who is willing to learn from others — not by simply taking over another's opinions, but by gladly allowing others to criticize his ideas and by gladly criticizing the ideas of others. The emphasis here is on the idea of criticism or, to be more precise, critical discussion. The genuine rationalist does not think that he or anyone else is in possession of the truth; nor does he think that mere criticism as such helps us achieve new ideas. But he does think that, in the sphere of ideas, only critical discussion can help us sort the wheat from the chaff. He is well aware that acceptance or rejection of an idea is never a purely rational matter; but he thinks that only critical discussion can give us the maturity to see an idea from more and more sides and to make a correct judgement of it.