成功不是终点，失败也不是致命的：重要的是继续前进的勇气。
我对一切都保持怀疑。
The challenges in our lives are there to strengthen our convictions. They are not there to run us over.
我不惧怕任何人，但我尊重每一个人。
In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.