The human being is a most curious creature.
用秤称一称,才能知道轻重;用尺量一量,才能知道长短。
The environment is a long-term issue that requires long-term commitment.
如果你感到不安,猜猜看?世界上的其他人也是如此。不要高估竞争对手而低估自己。你比你想象的更好。