Who said "Humor is the sound of denial before death."?

This quote is attributed to Steppenwolf.

Humor is the sound of denial before death. - Steppenwolf

"Humor is the sound of denial before death."

Steppenwolf Humor

"I am the lord of Apokolips, and I bow to no one."

"Your world is fragile, built on false hope and fleeting dreams."

"Strength is the only currency that matters in this universe."

"I have conquered countless worlds. Yours will fall like all the rest."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."