Rare smile.

I, John D Rockefeller, had been raised in the strictest Baptist faith, in the paternal farm near Cleveland, Ohio.
I used to buy candies wholesale to resell them to my siblings at a profit. After mandatory school, I worked at 16 as an accountant for a grocer in Cleveland, I was the kind of accountant that saw everything and forgot nothing.

I was a very religious man, and I thought that God would reward the chosen ones. I hated waste, disorder and middlemen.
I never smiled, except for an exceptionally profitable deals.

In 1863 with and associate and a chemist, I built his first refinery in Cleveland, producing naphtha and kerosene. Reinvesting constantly the profits and keeping costs and wages as low as possible, I quickly grew my business.