唯一不变的是变化，持续的变化，不可避免的变化，这是当今社会的主导因素。任何明智的决策都必须考虑到世界现在的样子，以及世界未来的样子。
The only constant is change, continuing change, inevitable change, that is the dominant factor in society today. No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.
史记
The beauty of a mathematical proof is in its elegance and the way it reveals the underlying truth in a clear and concise manner.
In the short run, the market is a voting machine but in the long run, it is a weighing machine.