For starters: A Fool Repeats

"As a dog returns to its vomit,

so a fool repeats his folly."

--Proverbs 26: 11

"The laws of memory are subject to the more general laws of habit. Habit is a compromise effected between the individual and his environment, or between the individual and his own organic eccentricities, the guarantee of a dull inviolability, the lightning-conductor of his existence. Habit is the ballast that chains the dog to his vomit. Breathing is habit. Life is habit." (7-8)

--Beckett, Samuel. Proust. New York: Grove Press, 1957.

[Pictured, from right to left: one dearly-departed luck dragon and his vampire friend, two creatures of habit]