Fifteen years can be a long or a short time, depending upon whether one is immortal or not. - Jane Yolen

For what was art, she thought, but the heart and soul made visible.

Did we do wrong in believing, Marina?" Mom asked suddenly.
"Never in believing, Mom," I said. "Just in what we believed.

“No, you cannot…must not…shall not…may not…” to everything that seemed even the slightest bit interesting or exciting or dangerous.
So Waverly did what every child of ten does. He did it all anyway.