In these heated, divisive times, all of us sure could use more kindness. This coming Sunday, Feb. 17, offers us a reminder to embrace kindness.

Feb. 17 is Random Acts of Kindness Day 2019. It’s a day when humans around the world pay homage to the simple art of being kind to their fellow humans.

Unexpected kindness is one of my favorite forms of that art.

In Pittsburgh, land of the kindest, most polite people on Earth, strangers love to hold the door open for you at the supermarket or post of...