写作古文的难度，比登上青天还要难。

The concept of justice is not a legal concept, but a moral one.

The past is full of voices—we just have to listen.

Expertise in any domain involves the automation of basic skills, freeing attention for higher-level aspects of performance.

I believe that man will not merely endure: he will prevail. He is immortal, not because he alone among creatures has an inexhaustible voice, but because he has a soul, a spirit capable of compassion and sacrifice and endurance.