You can observe a lot just by watching.

© Yogi Berra

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Yogi Berra - Wikipedia
Yogi Berra Berra with the New York Yankees in 1953 Catcher / Manager Born: (1925-05-12)May 12, 1925 St. Louis, Missouri Died: September 22, 2015(2015-09-22) (aged 90) West Caldwell, New Jersey Batt...