The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
抽象的目的不是模糊，而是创建一个新的语义层次，在这个层次上可以绝对精确。
The spread of liberal democracy and the integration of the world economy have created a situation in which the major powers are no longer willing to risk war with one another.
大自然往往隐藏于幕后。
A picture must be a thing in itself, not a representation of something else.
知识最大的敌人不是无知，而是以为自己知道。