Who said "Patience is bitter, but its fruit is sweet."?

This quote is attributed to O. Henry.

Patience is bitter, but its fruit is sweet. - O. Henry

"Patience is bitter, but its fruit is sweet."

O. Henry Patience

Writer American 1862–1910

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

"We are not made by our circumstances, we are made by our choices."

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

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

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."