The Ferengi Rules of Acquisition are a set of guidelines that govern the business practices and ethical behavior of the Ferengi, a fictional alien species from the Star Trek universe. These rules emphasize profit-making, cunning, and the importance of commerce in Ferengi culture. There are a total of 285 rules, each offering advice on how to succeed in business and navigate various situations. The rules are often humorous and reflect the Ferengi's obsession with wealth and trade. For example, one of the most famous rules states, "Once you have their money, you never give it back." This encapsulates the Ferengi philosophy of prioritizing profit above all else, showcasing their unique approach to life and business.