In "You Learn By Living", this first lady of the 1940s challenged, "You must do the thing you think you cannot do"
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You Learn by Living: Eleven Keys for a More Fulfilling Life by Eleanor Roosevelt,
... [DOC] [TLE] Roosevelt, Eleanor - Quotations | WIST [PAR] Quotations by Eleanor Roosevelt (1884-1962) First Lady of the US (1933-45), 
politician, diplomat, activist.