stuggling sense of identity

“It'll be no use their putting their heads down and saying "Come up again, dear!” I shall only look up and say "Who am I then? Tell me that first, and then, if I like being that person, I'll come up: if not, I'll stay down here till I'm somebody else"--but, oh dear!' cried Alice, with a sudden burst of tears, 'I do wish they WOULD put their heads down! I am so VERY tired of being all alone here!” 

It's no use going back to yesterday, because I was a different person then.

another narrative imposed on the book is the idea of grappling with a sense of self. Carroll led a very controlled existence, struggling with self-identity, a recurring theme in the book as Alice regularly expresses uncertainty about who she is after she enters Wonderland.

Caterpillar scene- alice gets angry trying to explain who she is