Memory is a battlefield where truth and myth collide.
When you lead， your real job is to create more leaders， not more followers.
Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
里氏替换原则是面向对象编程中的一个基本概念，确保派生类可以替代其基类使用，而不会改变程序的正确性。
市场总是在变化，你的策略也应该如此。