Letters from a Self-Made Merchant to His Son Being the Letters written by John Graham, Head of the House of Graham & Company, Pork-Packers in Chicago, ... known to his intimates as "Piggy."

by George Horace Lorimer

Some men learn all they know from books; others from life; both kinds are narrow. The first are all theory; the second are all practice. It’s the fellow who knows enough about practice to test his theories for blow-holes that gives the world a shove ahead, and finds a fair margin of profit in shoving it.