随机评估可以帮助我们了解发展中哪些措施有效，哪些无效。

Every breakthrough is at first laughable and ridiculous. In fact if it did not start out laughable and ridiculous， it is not a breakthrough.

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.

幸福就是珍惜小事。

Life isn't about how many breaths you take, but about the moments that take your breath away.

我的孩子们教会我，爱是没有极限的。