我认为人们相信天堂是因为他们不喜欢死亡的想法，因为他们想继续活着，也不喜欢别人搬进他们的房子、把他们的东西扔进垃圾桶的想法。

The more you know who you are, and what you want, the less you let things upset you.

To understand is to invent.

"In the study of algorithms, we often find that the most efficient solutions are also the most elegant."

"In every brushstroke lies the history of centuries."

困难不在于提出新观念，而在于摆脱旧观念。