"WHAT is it," asked the Sphinx, "that walks on four legs in the morning, on two legs at noon and on three legs in the evening?" And all who passed her way had to answer that question-or be devoured That was the Riddle of the Sphinx of olden days. But to modern man has come a far more difficult one- "How can I earn more money? How can I make enough to get the necessities and the comforts of life to which my family and I are entitled?" ...