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Innovation and pragmatism must go hand in hand.

Understanding the real lives of the poor is the first step toward designing effective policies to help them.

A mathematician's work is mostly a solitary pursuit, but it builds on the work of many others.

Escribir es una forma de terapia; a veces me pregunto cómo hacen los que no escriben, los que no pintan, los que no hacen música, para escapar de la locura, de la melancolía, del terror pánico que es inherente a la condición humana.

Leadership in energy isn't about controlling resources—it's about stewarding them wisely.