| Number | Rule | Source |
|---|
| 1 | Once you have their money, you never give it back. | DS9: "The Nagus", "Heart of Stone" |
| 3 | Never spend more for an acquisition than you have to. | DS9: "The Maquis, Part II" |
| 6 | Never allow family to stand in the way of opportunity.[1] | DS9: "The Nagus"; ENT: "Acquisition" |
| 7 | Keep your ears open. | DS9: "In the Hands of the Prophets" |
| 9 | Opportunity plus instinct equals profit. | DS9: "The Storyteller" |
| 10 | Greed is eternal. | DS9: "Prophet Motive"; VOY: "False Profits" |
| 16 | A deal is a deal.
| DS9: "Melora" |
| 17 | A contract is a contract is a contract ... but only between Ferengi. | DS9: "Body Parts" |
| 18 | A Ferengi without profit is no Ferengi at all. | DS9: "Heart of Stone" |
| 21 | Never place friendship above profit. | DS9: "Rules of Acquisition" |
| 22 | A wise man can hear profit in the wind. | DS9: "Rules of Acquisition"; VOY: "False Profits" |
| 23 | Nothing is more important than your health ... except for your money. | ENT: "Acquisition" |
| 31 | Never make fun of a Ferengi's mother.
| DS9: "The Siege" |
| 33 | It never hurts to suck up to the boss.
| DS9: "Rules of Acquisition", "The Dogs of War" |
| 34 | War is good for business
| DS9: "Destiny", "The Siege of AR-558" |
| 35 | Peace is good for business.
| TNG: "The Perfect Mate"; DS9: "Destiny" |
| 45 | Expand or die.
| ENT: "Acquisition"; VOY: "False Profits" |
| 47 | Never trust a man wearing a better suit than your own. | DS9: "Rivals" |
| 48 | The bigger the smile, the sharper the knife. | DS9: "Rules of Acquisition" |
| 57 | Good customers are as rare as latinum. Treasure them. | DS9: "Armageddon Game" |
| 59 | Free advice is seldom cheap. | DS9: "Rules of Acquisition" |
| 62 | The riskier the road, the greater the profit. | DS9: "Rules of Acquisition", "Little Green Men", "Business as Usual" |
| 74 | Knowledge equals profit. | VOY: "Inside Man" |
| 75 | Home is where the heart is, but the stars are made of latinum. | DS9: "Civil Defense" |
| 76 | Every once in a while, declare peace. It confuses the hell out of your enemies. | DS9: "The Homecoming" |
| 94 | Females and finances don't mix. | DS9: "Ferengi Love Songs", "Profit and Lace" |
| 95 | Expand or die.
| VOY: "False Profits"; ENT: "Acquisition" |
| 98 | Every man has his price. | DS9: "In the Pale Moonlight" |
| 102 | Nature decays, but latinum lasts forever. | DS9: "The Jem'Hadar" |
| 103 | Sleep can interfere with...
| DS9: "Rules of Acquisition" |
| 109 | Dignity and an empty sack is worth the sack. | DS9: "Rivals" |
| 111 | Treat people in your debt like family ... exploit them. | DS9: "Past Tense, Part I", "The Darkness and the Light" |
| 112 | Never have sex with the boss's sister. | DS9: "Playing God" |
| 125 | You can't make a deal if you're dead. | DS9: "The Siege of AR-558" |
| 139 | Wives serve, brothers inherit. | DS9: "Necessary Evil" |
| 168 | Whisper your way to success. | DS9: "Treachery, Faith and the Great River" |
| 190 | Hear all, trust nothing. | DS9: "Call to Arms" |
| 194 | It's always good to know about new customers before they walk in your door.
| DS9: "Whispers" |
| 203 | New customers are like razor-toothed gree-worms. They can be succulent, but sometimes they bite back. | DS9: "Little Green Men" |
| 208 | Sometimes the only thing more dangerous than a question is an answer. | DS9: "Ferengi Love Songs" |
| 211 | Employees are the rungs on the ladder of success. Don't hesitate to step on them. | DS9: "Bar Association" |
| 214 | Never begin a negotiation on an empty stomach. | DS9: "The Maquis, Part I" |
| 217 | You can't free a fish from water. | DS9: "Past Tense, Part I" |
| 223 | (incomplete, but presumably concerned the relationship between "keeping busy" and "being successful") | DS9: "Profit and Loss" |
| 229 | Latinum lasts longer than lust. | DS9: "Ferengi Love Songs" |
| 239 | Never be afraid to mislabel a product.
| DS9: "Body Parts" |
| 263 | Never allow doubt to tarnish your lust for latinum. | DS9: "Bar Association" |
| 285 | No good deed ever goes unpunished. | DS9: "The Collaborator", "The Sound of Her Voice" |
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