Who said "Let them try. Let them fail. Let them despair."?

This quote is attributed to Doomsday.

Let them try. Let them fail. Let them despair. - Doomsday

"Let them try. Let them fail. Let them despair."

Doomsday Motivation

"I am the thing that darkness fears."

"Destruction is the only truth I know."

"You cannot stop what has already begun."

"I grow stronger with every battle."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."