Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
推动并保持资本主义引擎运转的根本动力来自新的消费品、新的生产或运输方法、新市场以及资本主义企业创造的新的工业组织形式。
"The past is a puzzle, and every piece matters."
The best leaders are those who listen more than they speak.