父母死气沉沉的生活对周围人特别是自己孩子的影响，是无与伦比的。
真相很少纯粹，也绝不简单。
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
我们用数学来理解市场，而不是预测市场。
The coal industry must evolve with technology to meet global energy demands sustainably.