"The adventure is over. Everything gets over, and nothing is ever enough. Except the part you carry with you. It's the same as going on a vacation. Some people spend all their time on a vacation taking pictures so that when they get home they can show their friends evidence that they had a good time. They don't pause to let the vacation enter inside of them and take that home."
-- E.L. Konigsburg, From the Mixed-Up Files of Mrs. Basil E. Frankweiler
This book fascinated me in my early years. Two precocious children running away to live in the Metropolitan Museum of Art. Recently I re-read it, and it's every bit as good as I'd remembered. A true classic.