Greenblatt - Genius

From page 28:

As much as possible, you don't want to be well paid merely for taking big risks. Anyone can manage that. You want to be well paid because you did your homework. If you are one of the few people to analyze a particular investment opportunity, it follows that you are in the best position to assess the appropriate payoff for the risk taken. Not all obscure or hidden investment opportunities are attractive. The idea is to place your "bets" in situations where the rewards promise to greatly outweigh the risks.