From an early age, Ernest Shackleton was drawn to the sea.2 Many medical practitioners still subscribed to the ancient theory of the "four humors" developed by the Roman physician Galen (131-199 AD). 3 While he loved to read because it fueled his
appetite for adventure, young Shackleton was often bored in school. His father, a doctor, wanted Ernest to pursue medicine, but
he accepted the boy's restless nature and allowed him to join a southbound ship's crew when he was sixteen. 4 5Shackleton's
first experience at sea in 1890 was a difficult one, but he wasn't discouraged. In fact, he dreamed of going even farther south to
mysterious Antarctica.
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