The mathematician's best work is art, a high perfect art, as daring as the most secret dreams of imagination, clear and limpid.
The truth is always exciting. Speak it, then. Life is dull without it.
Mathematics is a way of thinking, not just a collection of facts.
广东话谚语
世界文明的命运取决于为全人类提供体面的生活水平。
It is to the credit of human nature, that, except where its selfishness is brought into play, it loves more readily than it hates.