Keep every promise you make and only make promises you can keep.
Roughly speaking, the more one pays for food, the more sweat and spittle one is obliged to eat with it.... Dirtiness is inherent in hotels and restaurants, because sound food is sacrificed to punctuality and smartness... The only food at the Hotel X which was ever prepared cleanly was the staff's.
A man vows, and yet will not east away the means of breaking his vow. Is it that he distinctly means to break it? Not at all; but the desires which tend to break it are at work in him dimly, and make their way into his imagination, and relax his muscles in the very moments when he is telling himself over again the reasons for his vow.
A man cannot free himself by any self-denying ordinances, neither by water nor potatoes, nor by violent possibilities, by refusing to swear, refusing to pay taxes, by going to jail, or by taking another man's crops or squatting on his land. By none of these ways can he free himself; no, nor by paying his debts with money; only by obedience to his own genius.