你没有第二次机会,生活不是任天堂游戏。
可持续性不是一种选择;它是负责任农业的唯一前进道路。
过去总是与我们同在,因为它滋养着现在。
The only person you should try to be better than is the person you were yesterday.
The process of solving a mathematical problem is often more important than the solution itself.