“Skinny bones, skinny bones,” the boy taunted. “Stick,” another chimed. In return, I could have chanted “sticks and stones may break my bones, but words will never hurt me.” But even as a little girl, I knew the popular rhyme wasn’t true. Unkind, thoughtless words did hurt—sometimes badly, leaving wounds that went deeper and lasted much longer than a welt from a stone or stick...