Then it was really game on, as Abel Xavier inexplicably fouled McPhee just inside the area and Parkin slotted in the penalty.

BBC: By Jonathan Stevenson

How do we know that Cain thought of Abel as his sheep?

FORBES: Dear President Obama: I'm Only My Brother's Keeper If My Brother Is My Sheep

Even such Cain-and-Abel types as Raymond Hood, a hard-drinking visionary architect, and John Todd, the authoritarian teetotaller that Rockefeller hired as his chief developer, became good business buddies.

ECONOMIST: Architecture

To continue the interpretation, the story of Cain and Abel may be taken as an illustration of the zero-sum game of primogeniture, as well as an allegory for the slaughter of nomadic pasturage by urban agriculture.

NEWYORKER: The Sanctuary

Mr. Nicely of Geico comes next ("stellar, " as the 2005 letter put it), followed by Mr. Abel of MidAmerican ("terrific, " 2008), Mr. Kinstler of See's ("extraordinary, " 2007), Tom Nerney of U.S. Liability Insurance ("fabulous, " 2002) and Mr. Jain ("amazing, " 2006).

WSJ: And Warren Buffett's Successor Is...

Cain and Abel offer the fruits of their labor, grain and sheep respectively, to God as some sort of religious observance.

FORBES: Dear President Obama: I'm Only My Brother's Keeper If My Brother Is My Sheep