“You are not to disbelieve human science or think human reason invalid except when they venture outside their province.”
Source: What we live by (1932), p. 31
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Ernest Dimnet 17
French writer 1866–1954Related quotes
Source: The Mismeasure of Man (1996), p. 272

As quoted in The Works of the Emperor Julian (1923) by Wilmer Cave France Wright, p. 41
General sources

Mont Saint Michel and Chartres (1904)
Context: In every age man has been apt to dream uneasily, rolling from side to side, beating against imaginary bars, unless tired out he has sunk into indifference or scepticism. Religious minds prefer scepticism. The true saint is a profound sceptic; a total disbeliever in human reason, who has more than once joined hands on this ground with some who were at best sinners. Bernard was a total disbeliever in scholasticism; so was Voltaire.

Source: Down and out in Paris and London (1933), Ch. 30
Source: Down and Out in Paris and London
Context: He was an embittered atheist (the sort of atheist who does not so much disbelieve in God as personally dislike Him), and took a sort of pleasure in thinking that human affairs would never improve. Sometimes, he said, when sleeping on the Embankment, it had consoled him to look up at Mars or Jupiter and think that there were probably Embankment sleepers there. He had a curious theory about this. Life on earth, he said, is harsh because the planet is poor in the necessities of existence. Mars, with its cold climate and scanty water, must be far poorer, and life correspondingly harsher. Whereas on earth you are merely imprisoned for stealing sixpence, on Mars you are probably boiled alive. This thought cheered Bozo, I do not know why. He was a very exceptional man.