Who said "The power of a single word can heal or wound a soul."?

This quote is attributed to O. Henry.

The power of a single word can heal or wound a soul. - O. Henry

"The power of a single word can heal or wound a soul."

O. Henry Power

Writer American 1862–1910

"Turn up the lights. I don't know what time it is."

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"Life is made up of sobs, sniffles, and smiles, with sniffles predominating."

"A stitch in time may have ten times the sequel."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."