You can't build an empire without making a few enemies along the way.

解析：悔悟虽好，但改正更重要。

最伟大的教训来自最艰难的挣扎。

生命太重，不必当真。

"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'"

乐观主义者认为这是所有可能世界中最好的一个。悲观主义者则担心这是真的。