The stamp features the Bolivian professor wearing his iconic hat and glasses with a stern look in his eyes, the look that everyone that knew him remembers him by. The professor died in 2010 from cancer at the age of 79 years old.
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One of his famous phrases was: “If we expect kids to be losers they will be losers; if we expect them to be winners they will be winners. They rise, or fall, to the level of the expectations of those around them, especially their parents and their teachers.”
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You can find the stamps at your local post office or buy them online.