有人认为坚持使我们强大，但有时放手才是最好的。

认证不是终点，而是负责任林业的起点。

成为一名作家就是成为一名专业的观察者。

连续时间金融的美妙之处在于，它让我们能够以非常精确的方式思考不确定性的经济学。

我越是思考语言，就越惊讶于人们竟然能够相互理解。

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.