There is an expression for mature, enlightened people: old souls. Whether this description is literal, which posits the existence of an eternal soul, or merely figurative, the saying has deep resonance. To be an old soul means to be past the things that do not really matter. Letting the unimportant things slide, letting go of acquisitive impulses, and being content are the hallmarks of old souls.

Of course, it's hard to do those things when there is so much cool stuff for sale in our world! Even if one considers oneself an enlightened person, it is true to say that people find a way to develop more expensive tastes as their means improve; give a Spartan a few million dollars, and you'll see him driving a fancy car, wearing fancy clothes, and eating fancy food. Financial success is, in many ways, the truest test of one's self-control. To have the means to do anything, and choose to do nothing, is antithetical to most human impulses.

So how would you behave if you just inherited a billion dollars from some long-lost relative who always felt a special connection to you? Would you blow it all in one place? Would you try to do good in the world? Would you lavish your friends and family in riches or hoard it? Take this quiz, and together we will find out.