笔墨当随时代，犹诗文风气所转。
强调艺术创作应与时代精神同步，如同文学风格随时代变迁而变化。
偏差和方差之间的权衡是机器学习中的一个基本概念。
Children understand more than we often give them credit for.
The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.
每个圣人都有过去，每个罪人都有未来。
You have to believe in yourself when no one else does.