The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.
It's like the slaughter of the innocents.It makes the people who run Las Vegas seem like good people.
你越深入数学,就越意识到还有多少未知。
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.