Nowadays people know the price of everything and the value of nothing.
如今人们对每样东西的价格了如指掌，对它们的价值却一无所知。
所有痛苦的根源是执着。
译文：世家子弟登上高位，而有才华的人却埋没在低级的官职中。
Mathematics is the language with which God has written the universe.
The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
The most dangerous poison is the feeling of achievement. The antidote is to think every evening what can be done better tomorrow.