"When some men discharge an obligation, you..." - Quote by Mark Twain

“Nothing so needs reforming as other people's habits. Fanatics will never learn that, though it be written in letters of gold across the sky. It is the prohibition that makes anything precious.”

“The only way to keep your health is to eat what you don't want, drink what you don't like, and do what you'd rather not.”

“We have an insanity plea that would have saved Cain.”

“Work consists of whatever a body is obliged to do. Play consists of whatever a body is not obliged to do.”

“It is a dangerous experiment to call in gratitude as an ally to love. Love is a debt which inclination always pays, obligation never.”

“If there's even one thing we can do - even one life we can save - we have an obligation to try”

“Our problem with desire is that we want too little.”

“And here one must not that hatred is acquired just as much by means of good actions as by bad ones; and so, as I said above, if a prince wishes to maintain the state, he is often obliged not to be good; because whenever that group which you believe you need to support you is corrupted, whether it be the common people, the soldiers, or the nobles, it is to your advantage to follow their inclinations in order to satisfy them; and then good actions are your enemy.”

“It's not people who resent successful people; it's resentful people who resent successful people.”