What an investor needs is the ability to correctly evaluate selected businesses. Note that word โselectedโ: You don't have to be an expert on every company, or even many. You only have to be able to evaluate companies within your circle of competence. The size of that circle is not very important; knowing its boundaries, however, is vital.
Warren BuffettHaving first rate people on the team is more important than designing hierarchies and clarifying who reports to whom.
Warren BuffettIt is unquestionably true that the investment companies have their money more conventionally invested than we do. To many people conventionality is indistinguishable from conservatism. In my view, this represents erroneous thinking. Neither a conventional nor an unconventional approach, per se, is conservative.
Warren BuffettTo invest successfully, you need not understand beta, efficient markets, modern portfolio theory, option pricing or emerging markets. You may, in fact, be better off knowing nothing of these. That, of course, is not the prevailing view at most business schools, whose finance curriculum tends to be dominated by such subjects. In our view, though, investment students need only two well-taught courses - How to Value a Business, and How to Think About Market Prices.
Warren Buffett