当思想掌握了群众，它就成为一种物质力量。
Man's search for meaning is the primary motivation in his life.
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
发现现象原因或真实假设的艺术，如同破译的艺术，其中巧妙的猜想常缩短道路。
The energy sector is not just an industry; it's a vital part of global development.