Which line from Through the Looking-Glass by Lewis Carroll contains the best example of symbolism?

“I don’t want to be anybody’s prisoner. I want to be a Queen.”
“Thank you very much,” said Alice. “May I help you off with your helmet?”
“I hope you’ve got your hair well fastened on?” he continued, as they set off.
“Well, just then I was inventing a new way of getting over a gate—would you like to hear it?”