脾气切忌旺盛，心志切忌满足，才情切忌显露。
The writer’s job is to tell the truth.
文明就像一层薄冰，漂浮在混乱与黑暗的深渊之上。
困难不在于提出新观念，而在于摆脱旧观念。
The concept of computational efficiency is central to the design of learning algorithms.