Rules of Acquisition and other Trek minutiae

Have a look at Memory Alpha, a comprehensive reference site about everything you need to know about the Star Trek universe.

Here, for example, are the Ferengi Rules of Acquisition:

1	Once you have their money, you never give it back.
2	The best deal is the one that makes the most profit.
3	Never pay more for an acquisition than you have to.
4	A woman wearing clothes is like a man in the kitchen.
6	Never allow family to stand in the way of opportunity.
7	Keep your ears open.
8	Small print leads to large risk.
9	Opportunity plus instinct equals profit.
10	Greed is eternal.
11	Even if it's free, you can always buy it cheaper.
12	Anything worth selling is worth selling twice.
13	Anything worth doing is worth doing for money.
16	A deal is a deal... until a better one comes along.
17	A contract is a contract is a contract... but only between Ferengi.
18	A Ferengi without profit is no Ferengi at all.
19	Satisfaction is not guaranteed.
21	Never place friendship above profit.
22	A wise man can hear profit in the wind.
23	Nothing is more important than your health... except for your money.
27	There is nothing more dangerous than an honest businessman.
28	Whisper your way to success.
31	Never make fun of a Ferengi's mother.
33	It never hurts to suck up to the boss.
34	War is good for business.
35	Peace is good for business.
40	She can touch your lobes, but never your latinum.
41	Profit is its own reward.
44	Never confuse wisdom with luck.
45	Expand or die.
47	Never trust a man wearing a better suit than your own.
48	The bigger the smile, the sharper the knife.
52	Never ask when you can take.
57	Good customers are as rare as latinum. Treasure them.
58	There is no substitute for success.
59	Free advice is seldom cheap.
60	Keep your lies consistent.
62	The riskier the road, the greater the profit.
65	Win or lose, there's always Hupyrian beetle snuff.
74	Knowledge equals profit.
75	Home is where the heart is, but the stars are made of latinum.
76	Every once in a while, declare peace. It confuses the hell out of your enemies.
79	Beware of the Vulcan greed for knowledge.
82	The flimsier the product, the higher the price.
85	Never let the competition know what you're thinking.
89	Ask not what your profits can do for you, but what you can do for your profits.
94	Females and finances don't mix.
95	Expand or die.
97	Enough... is never enough.
98	Every man has his price.
99	Trust is the biggest liability of all.
102	Nature decays, but latinum lasts forever.
103	Sleep can interfere with your lust for latinum.
104	Faith moves mountains... of inventory.
106	There is no honor in poverty.
109	Dignity and an empty sack is worth the sack.
111	Treat people in your debt like family... exploit them.
112	Never have sex with the boss's sister.
113	Always have sex with the boss.
121	Everything is for sale, even friendship.
123	Even a blind man can recognize the glow of latinum.
125	You can't make a deal if you're dead.
139	Wives serve, brothers inherit.
141	Only fools pay retail.
144	There's nothing wrong with charity... as long as it winds up in your pocket.
162	Even in the worst of times, someone turns a profit.
168	Whisper your way to success.
177	Know your enemies... but do business with them always.
181	Not even dishonesty can tarnish the shine of profit.
189	Let others keep their reputation. You keep their latinum.
190	Hear all, trust nothing.
192	Never cheat a Klingon... unless you can get away with it.
194	It's always good to know about new customers before they walk in your door.
202	The justification for profit is profit.
203	New customers are like razor-toothed gree worms. They can be succulent, but sometimes they bite back.
208	Sometimes the only thing more dangerous than the question is an answer.
211	Employees are the rungs on the ladder of success. Don't hesitate to step on them.
214	Never begin a negotiation on an empty stomach.
217	You can't free a fish from water.
218	Always know what you're buying.
223	Beware the man who doesn't make time for oo-mox.
229	Latinum lasts longer than lust.
236	You can't buy fate.
239	Never be afraid to mislabel a product.
242	More is good. All is better.
255	A wife is a luxury... a smart accountant a necessity.
261	A wealthy man can afford anything except a conscience.
263	Never let doubt interfere with your lust for latinum.
266	When in doubt, lie.
284	Deep down, everyone's a Ferengi.
285	No good deed ever goes unpunished.