Alice comes across a Caterpillar that is resting on top of a giant mushroom the Caterpillar asks Alice, “Who are you?” Alice has trouble explaining who she is ? and Alice tries to explain all the transformationsshe has undergone that day, but the Caterpillaris curt and unsympathetic with Alice’s uncertain explanations. In order to test Alice’s memory, the Caterpillar asks her to recite the verse “You are old, Father William.”