"Alice had a conversation with a caterpillar. She is dissatisfied with the fact she is only three inches tall.Then it got down off the mushroom, and crawled away in the grass, merely remarking as it went, `One side will make you grow taller, and the other side will make you grow shorter.'... Alice remained looking thoughtfully at the mushroom for a minute, trying to make out which were the two sides of it; and as it was perfectly round, she found this a very difficult question. However, at last she stretched her arms round it as far as they would go, and broke off a bit of the edge with each hand..."
Lewis Carroll, Alice in Wonderland, Chapter 5.