I learned to run until I was tired, then run even more after that.

I learned to run until I was tired, then run even more after that.

Muhammad Ali

Quote authenticity

Score:	Excellent This quote has an official author source You can cite this quote with confidence as true and correct Listed below is the factual evidence of an official source published by either the author, an author's representative or estate

2017 November 08	Origin: Tweet Link: https://twitter.com/MuhammadAli/status/881897958274461696	Image evidence

African American boxer, philanthropist and activist

January 17th, 1942 - June 3rd, 2016