mr. no, medical student." i'm also talking with the author of "eat, pray, love," elizabeth gilbert. great book, a lot of people read it. personally, i pray before i eat, and then i usually need about an hour before i can love. same rules as swimming, basically. and we also have mathematician dr. eugenia cheng. ( cheers and applause ) she has a new book called-- >> jon: a mathematician. >> stephen: i have to say, that's an impressive audience. dr. cheng has a new book called "how to bake pi." that's "p-i," the number. but the recipe went on literally forever. do you hear that? that's jon batiste and stay human. say hi, everybody! ( cheers and applause ) they're about to rock out 'til i talk out. but before they do, one more thing. a new study says that if your cat was bigger, it might want to kill you. as opposed to now, when your cat doesn't care whether you live or die. >> tonight, stephen welcomes daniel craig... author elizabeth gilbert... and mathematician dr. eugenia cheng. featuring jon batiste and stay captioning sponsored by cbs and now it's time for "the late show with step