'Charlie and I believe Berkshire should be a fortress of financial strength – for the sake of our owners, creditors, policyholders and employees. We try to be alert to any sort of megacatastrophe risk, and that posture may make us unduly apprehensive about the burgeoning quantities of long-term derivatives contracts and the massive amount of uncollateralized receivables that are growing alongside. In our view, however, derivatives are financial weapons of mass destruction, carrying dangers that, while now latent, are potentially lethal.'

Carta de Warren Buffet aos investidores na Berkshire Hathaway, em 2003.

Uma passagem de uma das várias cartas de Buffet enquanto Chairman. No conjunto, valem mais que muitos manuais de Corporate Finance, Investment Banking ou International Finance que andam por aí.