The United States is the most powerful country in the world, and it will remain so for the foreseeable future.

我不追求名利，只追求内心的满足。

最好的数学是简单的，但又不至于过于简单。

Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution.

The mind is what the brain does.

Every setback is just a setup for a comeback.