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 purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
Mathematics is the language in which the universe is written.
故事的力量在于它能够激发爱。
你有没有为将来打算过呢?