Sublime

Five years his senior, John was an aspiring scientist—he would receive a scholarship to study neurophysiology—who kept “an exquisite laboratory in the basement,” a realm that was Paul’s idea of heaven, but to which John seldom granted his little brother admittance.

His singleminded approach was so successful that he was able to buy into the Harkness family business within a few years, and shortly afterward made the acquaintance of one of his Cleveland counterparts in the grain-brokerage chain, one John D. Rockefeller.