相关性和因果关系之间的区别不仅仅是学术上的——它可能具有深远的政策影响。

The beauty of a woman is not in the clothes she wears, the figure that she carries, or the way she combs her hair. The beauty of a woman must be seen from in her eyes, because that is the doorway to her heart, the place where love resides.

The artist must be a servant of the invisible.

数学的语言是普遍的，超越了文化和语言的障碍。