过去并未死去,它甚至还未过去。
The past is not dead; it is not even past.
The best way to predict the future is to invent it.
投资新技术不是可选的,而是能源未来的必要条件。
历史的重量总是存在于我们使用的材料中。
The anarchic nature of the international system means that states must rely on self-help to ensure their survival.