A stupid man's report of what a clever man says is never accurate, because he unconsciously translates what he hears into something that he can understand. Bertrand Russell
No Jew was ever fool enough to turn Christian unless he was a clever man. Israel Zangwill
To succeed in the world, it is much more necessary to possess the penetration to discern who is a fool, than to discover who is a clever man. Charles Maurice de Talleyrand-Périgord
It's a wicked world, and when a clever man turns his brain to crime it is the worst of all. Arthur Conan Doyle
A very clever man though perhaps not a very strong character. Friedrich Paulus
Passion often renders the most clever man a fool, and even sometimes renders the most foolish man clever. François de La Rochefoucauld