信件是传记作者的金矿；它们揭示了官方记录所隐藏的东西。
Letters are the biographer's gold mine; they reveal what official records conceal.
You're dead if you aim only for kids. Adults are only kids grown up， anyway.
The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten.
我不害怕失败。我不害怕跌倒。我不害怕尴尬。我不害怕脆弱。
林奇投资组合中的典型大赢家通常需要三到十年或更长时间才能显现。
计算机科学和数学的交汇处是最令人兴奋的突破发生的地方。