A Quote by Lewis Carroll on questions, wonder, change, mystery, self-perception, and identity

Dear, dear!  How queer everything is to-day!  And yesterday things went on just as usual.  I wonder if I've been changed in the night?  Let me think:  was I the same when I got up this morning?  I almost think I can remember feeling a little different.  But if I'm not the same, the next question is, Who in the world am I?  Ah, that's the great puzzle!