Never esteem anything as of advantage to you that will make you break your word or lose your self-respect. Book III

It is a mistake to look too far ahead. Only one link in the chain of destiny can be handled at a time. Never Give In!

Adapt yourself to the environment in which your lot has been cast, and show true love to the fellow-mortals with whom destiny has surrounded you. Book VI

Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every funeral I meet; and especially whenever my hypos get such an upper hand of me, that it requires a strong moral principle to prevent me from deliberately steppint into the street, and methodically knocking people's hats off--then, I account it high time to get to sea as soon as I can. Moby Dick