Calvin and Hobbes by Bill Watterson for February 12, 1992
Calvin: Look, dad made me do my homework! He said, when I'm older, I'll discover that there are few pleasures greater than learning. So I said, fine, I'll learn when I'm older! Hobbes: What did he say? Calvin: He said, if I didn't start cracking books now, this would be as old as I'd get. Hobbes: Sounds like you learned something already.