I have learned that the most dangerous competitor is the one... - John Jacob Astor

"I have learned that the most dangerous competitor is the one who has nothing to lose."

John Jacob Astor

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."