The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.

我不是一个放弃幸福的人。

Every breakthrough is at first laughable and ridiculous. In fact if it did not start out laughable and ridiculous， it is not a breakthrough.

我一直是个注重隐私的人，但我明白这是不可避免的。

【译文】 孔子说：“年轻人应该孝顺父母，尊敬师长，认真诚信，广施爱心，亲近仁人志士。能轻松做到这些，才可以从事理论研究。”