Love is free; to promise for ever to love the same woman is not less absurd than to promise to believe the same creed.
爱是自由的;承诺永远爱同一个女人,与承诺永远相信同一个信条一样荒谬。
"The more we learn, the more we realize how much we don't know."
偏差和方差之间的权衡是机器学习中的一个基本概念。
定义就是限制。