股市的短期波动是不可预测的，但长期趋势是可以预测的。

你停止学习的那一刻，就是你开始落后的那一刻。

The first fruit of this imagination - and the first lesson of the social science that embodies it - is the idea that the individual can understand his own experience and gauge his own fate only by locating himself within his period, that he can know his own chances in life only by becoming aware of those of all individuals in his circumstances.

领导者的主要任务是创造和维持组织的竞争优势。