The Most Helpful Tool You Can Own

A pocket knife is an act of kindness. Really.

Photo: Westend61/Getty Images

I am a firm believer in the altruistic tool — the object you always have handy for other people as much as for you. I once wrote about the impeccably clean hanky. This time, it’s the folding pocket knife. Next time, I’m thinking it will be the wallet Band-Aid.