Shukhov ate his supper without bread--a double portion and bread on top of it would be too rich. So he'd save the bread. You get no thanks from your belly--it always forgets what you've just done for it and comes begging again the next day. ↗
The Bible and several other self help or enlightenment books cite the Seven Deadly Sins. They are: pride, greed, lust, envy, wrath, sloth, and gluttony. That pretty much covers everything that we do, that is sinful... or fun for that matter. ↗