"I think it's the old Mae West quote: 'Too much of a good thing could be wonderful.' We want to have more money in what we think are our best ideas, and the bottom line is if you want to outperform over a significant period of time, your portfolio can't look like the index. And frankly, I don't know too many people who can know two or three hundred companies really well. We try to know things that we own as well as any other outside shareholder."