I think the best thing you can do is to be kind to yourself and to others.
每个回声都包含着它所处空间的历史。
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.
Listen to your customers more than you speak to them - they'll tell you exactly what you need to know.
A sustainable future for coal depends on our ability to integrate cleaner practices without sacrificing the livelihoods of those who depend on the industry.