We are all obsessed with the idea of the frontier, but it's a frontier that keeps receding.

所有的幸福都依赖于勇气和工作。

创作就是赋予无生命之物以生命。

The mind is not a vessel to be filled, but a fire to be kindled.

Adaptation is the key to evolution.

国家是为法律而组织起来的人民。