Tina Fey's book Bossypants is full of wonderful one-liners that might also be true observations on life.

For instance, if you're thinking of coming to live in NYC, she suggests trying out one of its many  nail salons: "Sit in an enclosed space full of fumes and hold hands with a stranger for twenty minutes while everyone around you speaks a language you don't understand. If you enjoy this, you will enjoy the 6 train." Or the 7, or ....