'WHO ARE YOU?' SAID THE CATERPILLAR. THIS WAS NOT AN ENCOURAGING OPENING FOR A CONVERSATION. ALICE REPLIED, RATHER SHYLY, 'I - I HARDLY KNOW, SIR, JUST AT PRESENT - AT LEAST I KNOW WHO IWAS WHEN I GOT UP THIS MORNING, BUT I THINK I MUST HAVE BEEN CHANGED SEVERAL TIMES SINCE THEN.'