The goal of behavior is always the reduction of some drive or need.
安排任何来到你身边的碎片。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
没有一个社会能够真正繁荣和幸福,其中大多数成员都贫困和痛苦。
我们的员工是我们应对未来挑战的最大资产。