Who said "I find humor in dark places. It's the only way to stay sane."?

This quote is attributed to Frank Castle.

I find humor in dark places. It's the only way to stay sane. - Frank Castle

"I find humor in dark places. It's the only way to stay sane."

Frank Castle Humor

"Punishment is a language they understand."

"I'm not a hero. I'm a tool, sharpened and aimed."

"The only way to stop evil is to be better at it than they are."

"Mercy is for the living. The dead don't care."

"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."