Who said "Courage is doing what you're afraid to do."?

This quote is attributed to Rick Sanchez.

Courage is doing what you're afraid to do. - Rick Sanchez

"Courage is doing what you're afraid to do."

Rick Sanchez Courage

"I'm the smartest person in the universe. I invented my own science."

"Wubba lubba dub dub! That's my catchphrase for existential pain."

"Nobody exists on purpose. Nobody belongs anywhere. Everybody's gonna die."

"Your boos mean nothing, I've seen what makes you cheer."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."