农民增收不能只靠政策，更要靠市场机制和产业升级。
当大雪降下，冷风吹起，独行狼死，群聚狼生。
世界是个好地方，值得为之奋斗。
实现明天理想的唯一障碍是今天的疑虑。
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.
Science is not only a discipline of reason but also one of romance and passion.