At one point, I recognized that Warren Buffett, though he had every advantage in learning from Ben Graham, did not copy Ben Graham but, rather, set out on his own path and ran money his way, by his own rules... I also immediately internalized the idea that no school could teach someone how to be a great investor.

Innovation, especially in America, is continuing at a breakneck pace, even in areas facing substantial political or regulatory headwinds. The advances in health care in particular are breathtaking - so many selfless souls are working to advance science, and this is heartening.

Government policies and regulations in the postcrisis era have aided the hollowing-out of middle America far more than anything the private sector has done. These changes even expanded the wealth gap by making asset owners richer at the expense of renters.

I had begun to worry about the housing market back in 2003, when lenders first resurrected interest-only mortgages, loosening their credit standards to generate a greater volume of loans. Throughout 2004, I had watched as these mortgages were offered to more and more subprime borrowers - those with the weakest credit.