The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
谦逊是科学家所能拥有的最大美德。
金融危机不是资本主义的失败,而是金融体系的失败。
突破的关键不仅在于努力工作,还在于挑战现有范式的勇气。