Growth and change are the law of all life. Yesterday's answers are inadequate for today's problems ----just as the solutions of today will not fill the needs of tomorrow. (Franklin Roosevelt, Averican president)
生长与变化是一切生命的法则。昨日的答案不适用于今日的问题——正如今天的方法不能解决明天的需求。(美国总统 罗斯福.F.)