Who said "Work hard, not because you have to, but because it matters."?

This quote is attributed to Clint Barton (Civil War).

Work hard, not because you have to, but because it matters. - Clint Barton (Civil War)

"Work hard, not because you have to, but because it matters."

Clint Barton (Civil War) Work

"Sometimes I'm reading a book, and I have to shut it down because the book is teaching me something shameful."

"It's the job that makes you feel alive."

"I'm just a guy with a bow and arrow."

"You know what doesn't scare me? Not much these days."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."