问题在于我们不仅不理性，而且是可预测的非理性——我们的非理性行为会以同样的方式一再发生。

Food security is a global issue that requires local action.

A leader has the vision and conviction that a dream can be achieved. He inspires the power and energy to get it done.

The world is a book, and those who do not travel read only one page.