Castle, Season 4

Alexis:
(While giving her graduation speech.)There's a universal truth we all have to face whether we want to or not. Everything eventually ends. As much as I've looked forward to this day, I've always disliked endings. The last day of summer. The final chapter of a great book. Parting ways with a close friend. But endings are inevitable. Leaves fall. You close the book. You say good-bye. Today is one of those days for us. Today we say good-bye to everything that was familiar, everything that was comfortable. We're moving on. But just because we're leaving, and that hurts... There are some people who are so much a part of us they'll be with us no matter what. They are our solid ground, Our North Star, and the small clear voices in our hearts that will be with us... always.