方法可以有一百萬種或更多許多，但原則只有幾個。抓住原則的人可以有效的選擇自己的方法，而嘗試方法但忽略原則的人，一定會遇到問題。As to methods there may be a million and then some, but principles are few. The man who grasps principles can successfully select his own methods. The man who tries methods, ignoring principles, is sure to have trouble.

As to methods there may be a million and then some, but principles are few. The man who grasps principles can successfully select his own methods. The man who tries methods, ignoring principles, is sure to have trouble.
– Ralph Waldo Emerson, Poet
方法可以有一百萬種或更多許多，但原則只有幾個。抓住原則的人可以有效的選擇自己的方法，而嘗試方法但忽略原則的人，一定會遇到問題。

– 拉爾夫‧愛默生(1803-1882) 美國思想家、演說家、作家及詩人，在19 世紀領導美國的「超驗主義」運動，主張一種理想的精神狀態會超越人的肉體經驗，對美國文化有深遠的影響。