The foundation of all progress is the willingness to questio... - John Jacob Astor

"The foundation of all progress is the willingness to question everything you have been taught."

John Jacob Astor Change

Fur Trader & Merchant German-American 1763–1848

More from John Jacob Astor

"A man is known by the company he keeps."

"The richest man is not he who has the most, but he who wants the least."

"Do not let yesterday take up too much of today."

"Success is not final, failure is not fatal."

"Change brings new opportunities."

"Every day is a new opportunity."

"Healing doesn't mean forgetting."

"You either get better or you get bitter."