I like this Twitter profile that posts random quotes from the book: https://twitter.com/MobyDickatSea
A couple quotes I like:
1) “I will have no man in my boat,” said Starbuck, “who is not afraid of a whale.” By this, he seemed to mean, not only that the most reliable and useful courage was that which arises from the fair estimation of the encountered peril, but that an utterly fearless man is a far more dangerous comrade than a coward.
2) “How many barrels will thy vengeance yield thee even if thou gettest it, Captain Ahab? it will not fetch thee much in our Nantucket market.”... “Vengeance on a dumb brute!” cried Starbuck, “that simply smote thee from blindest instinct! Madness! To be enraged with a dumb thing, Captain Ahab, seems blasphemous.”
3) “In this world, shipmates, sin that pays its way can travel freely, and without a passport; whereas Virtue, if a pauper, is stopped at all frontiers.”
4) The narrator is also pretty open-minded and gracious towards different cultures. “Better sleep with a sober cannibal than a drunken Christian.”