可能近似正确（PAC）学习的概念在计算学习理论中具有基础性意义。
The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.
人不应惧怕死亡，而应惧怕从未开始生活。
The dead are never far from us. They’re in our hearts and on our minds and in the end all that separates us from them is a single breath, one last puff of air.
数学的美只对那些更有耐心的追随者展示。
To find a truth that is true to me, to find an idea for which I am willing to live and die.