The day before my high school graduation, the principal called an assembly. He wanted to say farewell informally, he explained, as he reviewed our years together.

There was hardly a dry eye among us as he concluded, "We will remember you, and hope you will remember us. More importantly, we want you to remember each other. I want all of you to meet in this very auditorium 25 years from today."

There was a moment of silence. Then a thin voice piped up, "What time?"