介导疼痛的分子非常古老，揭示了这种感觉在进化中的深远根源。
成功不是终点，失败也并非致命，重要的是继续前进的勇气。
I don't really care what people say about me. I just do what I want to do.
The novel is the art of the unfinished, the unresolved.
自由不是礼物，而是必须每天争取的成就。
The highest knowledge is the knowledge of the self.
What can be shown, cannot be said.