“Good habits are as addictive as bad habits, and a lot more rewarding.”

“The chief business of education… is to attempt to form good habits in children, to improve the understanding, and to check the formation of bad habits.”

“Our habits are our friends. Even our bad habits.”

“I have a good mind not to take Aloysius to Venice. I don't want him to meet a lot of horrid Italian bears and pick up bad habits.”

“Everytime you feed the flesh, you strenghten it. This is good if you are trying to build a good habit, but detrimental if you are trying to stop a bad habit. The way to "kill the flesh" is to starve it; to stop feeding it.”

“Lookin' back is a bad habit.”

“Good habits are here more effectual than good laws elsewhere.”
…ibi boni mores valent quam alibi bonae leges. [http://www.fordham.edu/halsall/source/tacitus-germ-latin.html#19]

“The usual bad poem in somebody’s Collected Works is a learned, mannered, valued habit, a habit a little more careful than, and little emptier than, brushing one’s teeth.”

“Point is, people lie a lot. Sometimes out of habit. Not many people are good at telling the truth.”

“This is a bit more expensive than my previous turbo-Ferrari habit, but not too bad.”