恐惧不是敌人。拒绝面对它才是摧毁我们的东西。
The most powerful statements are often the quietest.
有疑问时,就说真话。
Knowledge is valuable only when it is shared.
镜子经过淬炼会越来越明亮,钢铁经过锤炼会越来越坚硬。