To many men life is a failure; a poison-worm gnaweth at their heart.
 Friedrich Nietzsche, Thus Spoke Zarathustra (1891). copy citation

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

Context

“Sour apples are there, no doubt, whose lot is to wait until the last day of autumn: and at the same time they become ripe, yellow, and shrivelled. In some ageth the heart first, and in others the spirit. And some are hoary in youth, but the late young keep long young. To many men life is a failure; a poison-worm gnaweth at their heart. Then let them see to it that their dying is all the more a success. Many never become sweet; they rot even in the summer. It is cowardice that holdeth them fast to their branches. Far too many live, and far too long hang they on their branches.” source