真相并不总是最令人安慰的，但它是最必要的。

The Langlands program is a challenge to our understanding of the fundamental nature of mathematics.

Education is the lighthouse of the soul.

学习的魅力主要在于心灵在获取知识时体验到的满足感。

The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.

计算学习理论中的挑战在于理解学习算法的能力和局限性。