The trouble with the world is that the stupid are cocksure
and the intelligent are full of doubt.
The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.
(这个世界的最大问题就是愚蠢的人总对自己的想法抱有自信而聪明人总是满怀疑虑)It highlights the paradox where
overconfidence often accompanies ignorance, while true understanding
breeds caution and uncertainty.