在采矿业中，效率和环境保护必须齐头并进。
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
The poor are often forced to make choices that no one should have to make.
我对超自然存在的想法，就像我对数学的想法一样产生。因此我认真对待它们。
It’s not what we do once in a while that shapes our lives, but what we do consistently.