“Friendship is the hardest thing in the world to explain. It's not something you learn in school. But if you haven't learned the meaning of friendship, you really haven't learned anything.”
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Muhammad Ali 100
African American boxer, philanthropist and activist 1942–2016Related quotes

“Please forget everything that you have learned in school; for you haven't learned it.”
Foundations of Analysis (1960) as quoted by Eli Maor, The Pythagorean Theorem: A 4,000-year History (2007)
“If you learn from defeat, you haven't really lost.”

“You haven't learned how to live until you've learned how to give. ”
“What is the most important thing one learns in school? Self-esteem, support, and friendship.”
Source: Pieces of White Shell
Source: https://twitter.com/canlubochris/status/1239546180633124864 | Christian Canlubo personal Twitter account