The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.

我们对明天的唯一限制是我们今天的疑虑。

You have to stay true to yourself and your art.

思想掠过我的心上，如一群野鸭飞过天空。我听见它们鼓翼之声了。

电影是使不可见变为可见的艺术。

译文：听取多方面的意见才能明辨是非，只听信一方面的话就会分不清是非。