译文：惹下大祸是因为嘴巴乱说话，招致罪过是因为做事太狠心了。赏析：舌为利害本，口是祸福门。说话不慎就会惹下大祸。做事刻薄寡恩，冷酷无情，没有一点人情味，就会招来别人的怨恨和报复。

作家的职责是说出真相，即使在不便的时候。

"Man, unlike any other thing organic or inorganic in the universe, grows beyond his work, walks up the stairs of his concepts, emerges ahead of his accomplishments."

研究学习的唯一有意义的方法是通过客观测量。