创新不仅仅是技术的问题，而是解决实际问题。

我的名字叫尤塞恩·博尔特，我不认为有什么极限。

Every mathematical problem has a solution; the challenge is finding it.

The writer’s first job is not to have opinions but to tell the truth.

The past is what you remember, imagine you remember, convince yourself you remember, or pretend you remember.