The irreverent spokeswoman for today’s knitting revival, Stephanie Pearl-McPhee—a.k.a. the Yarn Harlot—is the author of several books on knitting, as well as keeper of the popular blog, www.yarnharlot.com. In Things I Learned from Knitting, she examines age-old aphorisms—e.g., “hope springs eternal”—with respect to knitting, casting them in a punchy, upbeat light.