The root of the problem is the failure to distinguish between operational effectiveness and strategy.
The most important thing in the Olympic Games is not winning but taking part； the essential thing in life is not conquering but fighting well.
學(xué)習(xí)數(shù)學(xué)的唯一方法就是做數(shù)學(xué)。
生存的關(guān)鍵不僅僅是體力，還有心理韌性。
Mathematics is the art of giving the same name to different things.
Do not be influenced by the opinions of others.