The world is so unpredictable. Things happen suddenly, unexpectedly. We want to feel we are in control of our own existence. In some ways we are, in some ways we're not. We are ruled by the forces of chance and coincidence.

Memory is the only paradise from which we cannot be driven.

思考是最艰难的工作，这可能是为什么如此少的人从事它。

我们必须倾听科学的声音，并采取紧急行动应对全球能源挑战。