And now a very curious thing happened.

None of the children knew who Aslan was any more than you do; but the moment the Beaver had spoken these words everyone felt quite different.

Perhaps it has sometimes happened to you in a dream that someone says something which you don't understand but in the dream it feels as if it had some enormous meaning -- either a terrifying one which turns the whole dream into a nightmare or else a lovely meaning too lovely to put into words, which makes the dream so beautiful that you remember it all your life and are always wishing you could get into that dream again...