Life can be pulled by goals just as surely as it can be pushed by drives.

The task must be made difficult, for only the difficult inspires the noble-hearted.

Geology doesn't compromise, and neither should our standards.

没有承诺，你永远不会开始，但更重要的是，没有坚持，你永远不会完成。

我不是一种潮流，我是一个标志。