科学的进步不是一条直线,而是一个螺旋,总是在前进,又总是回到起点。
The city is a school, and its buildings are the teachers.
伟大的小说是作者与读者跨越时空的对话。
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them — preferably in unexpected and helpful ways.