灵魂的快乐在于行动。
La joie de l'âme est dans l'action.
成功不是终点，失败不是致命的：重要的是继续前进的勇气。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
The thing about smart people is that they seem like crazy people to dumb people.
企业要履行社会责任，在保障能源供应的同时，推动环境保护和可持续发展。
To write is to remember, but to read is to forget.
The concept of infinity is not just a mathematical abstraction, but a physical reality.