The fundamental cause of trouble in the world today is that the stupid are cocksure while the intelligent are full of doubt.

The fundamental cause of trouble in the world today is that the stupid are cocksure while the intelligent are full of doubt.

当今世界上麻烦的根本原因是愚蠢的人自以为是，而聪明的人充满怀疑。

-- Bertrand Russell 罗素