Courage is what it takes to stand up and speak； courage is also what it takes to sit down and listen.
勇气是能站起来侃侃而谈。勇气也是能坐下来静静倾听。
粉丝们的爱和支持是我们前进的动力。
不要害怕失败，失败是成功之母。
世界上充满了显而易见的事情，却没有人注意到。
Your struggles don't define you; how you overcome them does.
The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.