最大的风险是不冒任何风险。在一个快速变化的世界里，唯一注定失败的策略就是不冒险。

The more we learn about black holes, the more we realize how much we still don’t know.

The best time to plant a tree was twenty years ago. The second best time is now.

The most powerful tool for change is knowledge, rigorously pursued and widely shared.

多样性推动创新；它是创造性思维的燃料。