The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

The universe is not required to be in perfect harmony with human ambition.

写作是理解我们在历史中位置的一种方式。

每一刻都是正在形成的记忆，而每一个记忆都是失去的一刻。