The key to successful investing is to have a disciplined approach.
The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.
"The most important thing in empirical work is to be clear about the question you are trying to answer."