我们必须保持警惕，坚决与一切内外敌人作斗争。

采石场不仅仅是一个坑，它是我们留给后代的遗产。

最好的领导者是那些倾听多于说话的人。

"A story is a letter that the author writes to himself, to tell himself things that he would be unable to discover otherwise."

The past is a foreign country; they do things differently there.

科学不仅仅是发现，更是解决现实世界的问题。