投资者应该意识到，市场并不总是以传统模型预测的方式回报风险。

外交需要保持冷静和理智，不受情绪和个人偏见的影响。

数学的本质在于它的自由。

我不想做对人们来说困难的事情。我想做容易的事情。

There's a tendency to think that our present politicians are much worse than we had in the past.But we tend to forget how awful our politicians were in the past.