Originally Posted by CAMom
It's actually an excerpt of a longer book by Cathy Seeley. She's the past president of the National Council of Teachers of Mathematics. This gives her a little more weight with teachers and principals.

http://mathsolutions.com/index.cfm?page=wp18&contentid=994&crid=294&mcrid=107
Excerpted from the amazon overview:
This book of forty essays includes topics for new teachers and veterans on everything from specific mathematical material to general ideas, such as, it is a teacher s job to keep students interested, or is boredom a developmental stage?

So, what was the lady's answer?

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar