One of the great mistakes is to judge policies and programs by their intentions rather than their results.

当灵魂不渺小时，一切都值得。

这段话是茅以升对自己一生的总结，强调奋斗是人生的重要桥梁。

陈述是传达信息的手段，承诺是作出承诺的手段。

儿童对活动的需要几乎比食物的需要更为强烈。