在科学中最令人兴奋的短语，预示着新发现的，不是“我找到了！”，而是“这很有趣...”

It always seems impossible until it's done.

Objects have always been carried, sold, bartered, stolen, retrieved and lost. People have always given things to other people.

解释：遵守礼制，可使国家长久，使社稷安定，让人们尊卑有别，上下有序，对后代是有益处的。

你无法让聪明的人只为了钱而特别努力地工作。