Wide diversification is only required when investors do not understand what they are doing.
Warren BuffettIt's good to learn from your mistakes. It's better to learn from other people's mistakes.
Warren BuffettIf you can't read the scoreboard. You don't know the score. If you don't know the score, you can't tell the winners from the losers.
Warren BuffettYou know ... you keep doing the same things and you keep getting the same result over and over again.
Warren Buffett