The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

Technological innovation is the core driving force for the high-quality development of the petroleum industry. We must increase R&D investment and break through key core technologies.

制药行业有道德义务将患者放在首位。

去爱就是冒着不被爱的风险。去希望就是冒着痛苦的风险。去尝试就是冒着失败的风险，但必须冒险，因为人生最大的危险就是不去冒险。