讨论学问要看其人的品行，讨论政治要考察当时的形势

你不该在旁观中度过一生，世界需要你参与其中。

That we our largest bounty may extend Where nature doth with merit challenge.

The key to success in mining is sustainability—balancing economic growth with environmental responsibility.

If you’re not failing occasionally, you’re not pushing the boundaries enough.