Study grammar

 

A biographer of the Vilna Gaon writes, “For all his vast knowledge of secular wisdom, the Gaon constantly emphasized to his students, that with the exception of Hebrew grammar, they should confine their studies to Torah.”[1]

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[1] Betzalel Landau, The Vilna Gaon (Brooklyn, NY: Artscroll, 1995) pp. 156.7