The critics only made me work harder.

The critics only made me work harder.

Muhammad Ali

Quote authenticity

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2017 November 08	Origin: Tweet Link: https://twitter.com/MuhammadAli/status/623233436149362688 "The critics only made me work harder.” #MuhammadAli pic.twitter.com/oIwdTaXi3s — Muhammad Ali (@MuhammadAli) July 20, 2015	Image evidence