你唯一应该努力超越的人就是昨天的自己。
The only person you should try to be better than is the person you were yesterday.
有利的时机和气候不如有利的地势，有利的地势不如人的齐心协力。
Sustainability is not an option, it's a responsibility.
语言是一种人类自发的创造，语言的发展遵循一定的规律。在人生的某一时期它会达到某种程度。