Who said "Death is not an ending, but a transition."?

This quote is attributed to O. Henry.

Death is not an ending, but a transition. - O. Henry

"Death is not an ending, but a transition."

O. Henry Death

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."

"Death doesn't scare me anymore."

"Death and I are old friends."

"Welcome to my world."

"Death is just the beginning."