The strategy we've adopted precludes our following standard diversification dogma. Many pundits would therefore say the strategy must be riskier than that employed by more conventional investors. We disagree. We believe that a policy of portfolio concentration may well decrease risk if it raises, as it should, both the intensity with which an investor thinks about a business and the comfort-level he must feel with its economic characteristics before buying into it.
Warren BuffettIt isn't given to man to be able to run a financial institution where different interest-rate scenarios will prevail on all of that so as to produce kind of smooth, regular earnings from a very large base to start with.
Warren BuffettBusinesses always have opportunities to improve service, product lines, manufacturing techniques, and the like, and obviously these opportunities should be seized. But a business that constantly encounters major change also encounters many chances for major error
Warren Buffett