At an age when everything is mysterious, there are no mysteries properly so-called.
 Jean-Jacques Rousseau, Emile, or On Education (1762). copy citation

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Author Jean-Jacques Rousseau
Source Emile, or On Education
Topic mystery age
Date 1762
Language English
Reference
Note Translated by Barbara Foxley
Weblink http://www.gutenberg.org/cache/epub/5427/pg5427-images.html

Context

“To that I reply, that there are mysteries which the heart of man can neither conceive nor believe, and I see no use in teaching them to children, unless you want to make liars of them. Moreover, I assert that to admit that there are mysteries, you must at least realise that they are incomprehensible, and children are not even capable of this conception! At an age when everything is mysterious, there are no mysteries properly so-called. "We must believe in God if we would be saved." This doctrine wrongly understood is the root of bloodthirsty intolerance and the cause of all the futile teaching which strikes a deadly blow at human reason by training it to cheat itself with mere words.” source