My toughest opponent has always been me.

My toughest opponent has always been me.

Muhammad Ali

Quote authenticity

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2017 November 08	Origin: Tweet Link: https://twitter.com/MuhammadAli/status/611201702205657090 “My toughest opponent has always been me.” #MuhammadAli pic.twitter.com/UK2jaXfyal — Muhammad Ali (@MuhammadAli) June 17, 2015	Image evidence

African American boxer, philanthropist and activist

January 17th, 1942 - June 3rd, 2016