Not when the truth is filthy, but when it is shallow, doth the discerning one go unwillingly into its waters.
 Friedrich Nietzsche, Thus Spoke Zarathustra (1891). copy citation

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Author Friedrich Nietzsche
Source Thus Spoke Zarathustra
Topic truth water
Date 1891
Language English
Reference
Note Translated By Thomas Common
Weblink http://www.gutenberg.org/files/1998/1998-h/1998-h.htm

Context

“Not a few who meant to cast out their devil, went thereby into the swine themselves. To whom chastity is difficult, it is to be dissuaded: lest it become the road to hell—to filth and lust of soul. Do I speak of filthy things? That is not the worst thing for me to do. Not when the truth is filthy, but when it is shallow, doth the discerning one go unwillingly into its waters. Verily, there are chaste ones from their very nature; they are gentler of heart, and laugh better and oftener than you. They laugh also at chastity, and ask: “What is chastity? Is chastity not folly?” source