Who said "Be grateful for those who challenge you."?

This quote is attributed to Indiana Jones.

Be grateful for those who challenge you. - Indiana Jones

"Be grateful for those who challenge you."

Indiana Jones Gratitude

"It's not the years, honey, it's the mileage."

"Snakes. Why'd it have to be snakes?"

"Fortune and glory, kid. Fortune and glory."

"We are not in a position to know what he knows. We must rely on faith."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"