MRI的发展彻底改变了医学成像领域，使我们能够以以前无法想象的方式看到人体内部。

"The act of writing is an act of optimism. You wouldn't take the trouble to do it if you felt it didn't matter."

真相总是丑陋的。

解释：今天不努力做事，明天就会财货贫乏。过去的时光已经过去了，再也不会回来了。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

艺术是人类的最后防线。