The very year that Bissell had organized his petroleum company a boy of sixteen had obtained his first job in a produce commission office on a dock in Cleveland. As the curtain rises on the career of John D. Rockefeller, we see him perched upon a high stool, adding up figures and casting accounts, faithfully doing every odd office job that came his way, earning his employer's respect for his industry, his sobriety, and his unmistakable talents for business. Nor does this picture inadequately visualize Rockefeller's whole after-life, and explain the business qualities that made possible his unexampled success. It is, indeed, the scene to which Mr. Rockefeller himself most frequently reverts when, in his famous autobiographical discourses to his Cleveland Sunday School, he calls our attention to the rules that inevitably lead to industrial prosperity. "Thrift, thrift, Horatio," is the one idea upon which the great captain of the oil business has always insisted. Many have detected in these habits of mind only the cheese-paring activities of a naturally narrow spirit. Rockefeller's old Cleveland associates remember him as the greatest bargainer they had ever known, as a man who had an eye for infinite details and an unquenchable patience and resource in making economies. Yet Rockefeller was clearly more than a pertinacious haggler over trifles. Certainly such a diagnosis does not explain a man who has built up one of the world's greatest organizations and accumulated the largest fortune which has ever been placed at the disposal of one man. Indeed, Rockefeller displayed unusual business ability even before he entered the oil business. A young man who, at the age of nineteen, could start a commission house and do a business of nearly five hundred thousand the first year must have had commercial capacity to an extraordinary degree.