孩子需要玩耍的自由和时间。玩耍不是奢侈品,而是必需品。
The only secure system is one that is powered off, cast in a block of concrete and sealed in a lead-lined room with armed guards.
风险管理不是消除风险,而是在可接受的范围内理解和控制风险。
我们唯一需要害怕的就是害怕本身。
The whole secret of life is to be interested in one thing profoundly and in a thousand things well.