The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt. 世上的麻煩是這樣的：愚者過於自信而智者滿腹懷疑。

The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.  世上的麻煩是這樣的：愚者過於自信而智者滿腹懷疑。