tThe devil is an optimist The devil is an optimist

tThe devil is an optimist The devil is an optimist

I would also capitalize "devil" as it is presumably a specific reference to Satan. See for example the description here: https://www.govinfo.gov/content/pkg/GPO-STYLEMANUAL-2008/pdf/GPO-STYLEMANUAL-2008-5.pdf However, other sources seem to use the lowercase: https://www.theatlantic.com/national/archive/2014/05/style-guide-for-religion/371813/

tThe dDevil iIs aAn oOptimist The Devil Is An Optimist

My impulse is to also capitalize devil below since in this context, he's the Devil, the Christian figure. But if the quote is someone else's translation, of course it doesn't change.

"The devil is an optimist if he believes that he can make humans meaner. "The devil is an optimist if he believes that he can make humans meaner.

"Mean" is a rather mild word that is often used by children. I don't know the exact connotations of "schlechter", but here are some possible stronger alternatives: "The devil is an optimist if he believes that he can make humans more evil than they are." "The devil is an optimist if he believes that he can make humans more immoral." "The devil is an optimist if he believes that he can make humans worse than they are."

It appeared in his satirical magazine "Die Fackel" ("tThe tTorch"), published and edited by Kraus himself between 1899 and 1936. It appeared in his satirical magazine "Die Fackel" ("The Torch"), published and edited by Kraus himself between 1899 and 1936.

It appeared in histhe satirical magazine "Die Fackel" ("tThe tTorch"), which Kraus himself published and edited by Kraus himself between 1899 and 1936. It appeared in the satirical magazine "Die Fackel" ("The Torch"), which Kraus himself published and edited between 1899 and 1936.

Your original version was grammatically correct. This is what I'd write if I were writing the sentence, however. The "himself" indicates that it was his magazine.