科学的进步不仅通过知识的积累来衡量，还通过提出新问题的能力来衡量。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

忠言逆耳利于行。就像疼痛提醒你哪里病变一样。

沉默是被压迫者的语言。