Afghanistan is the land of my past, the place where I had laughed and cried, but it was no longer my home.

注意力是心灵以清晰生动的形式，从几个同时可能出现的对象或思绪中占据一个。

数学的目标是以更深的方式理解宇宙。

Quality is remembered long after price is forgotten.

在真实与不真实之间，在真实与虚假之间，并没有严格的界限。

The concept of consciousness adds nothing to the explanation of behavior.

People are curious. A few people are. They will be driven to find things out, even trivial things. They will put things together, knowing all along that they may be mistaken. You see them going around with notebooks, scraping the dirt off gravestones, reading microfilm, just in the hope of seeing this trickle in time, making a connection, rescuing one thing from the rubbish.

空间必须被感受才能被理解。

如果你想让人做某事，就让它变得简单。