The greatest blessing of our democracy is freedom. But in the last analysis, our only freedom is the freedom to discipline ourselves.
每个生命都是一个值得讲述的故事,只要我们愿意花时间去倾听。
The key to progress is persistence and a willingness to challenge conventional wisdom.
化学是连接微观世界和我们日常所见现实的桥梁。