Psychology must be a science of observation, not speculation.

金融发展的关键在于建立能够可信地承诺保护财产权的制度。

我喜欢逗人笑，尤其是孩子们。

The way in which men produce their means of subsistence depends first of all on the nature of the actual means they find in existence and have to reproduce.

创新不仅仅是技术的问题；它是关于改变思维方式，为后代创造可持续的解决方案。