其服不同,其行犹一也。
他们的服饰不同,他们的行为确是一样的。 
写作是一种呼吸的方式。
数学家是模式的创造者,就像画家或诗人一样。
The whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards.
We live in a world of shadows, and what we call reality is only the shadow of a shadow.