Law 40: Despise the Free Lunch
What is offered for free is dangerous—it usually involves either a trick or a hidden obligation. What has worth is worth paying for. By paying your own way you stay clear of gratitude, guilt, and deceit. It is also often wise to pay the full price—there are no cutting corners with excellence. Be lavish with your money and keep it circulating, for generosity is a sign and a magnet for power.
Being open and flexible with money also teaches the value of strategic generosity, a variation on the old trick of "giving when you are about to take." By giving the appropriate gift, you put the recipient under obligation. Generosity softens people up—to be deceived. By gaining a reputation for liberality, you win people's admiration while distracting them from your power plays. By strategically spreading your wealth, you charm the others, creating pleasure and making valuable allies. - #RobertGreene