Don't be too clever for an audience. Make it obvious. Make the subtleties obvious also.
Billy WilderThere are plenty of clever young writers. But there is too much genius, not enough talent.
J. B. PriestleyThought is so cunning, so clever, that it distorts everything for its own convenience.
Freedom from the KnownThere are so many different kinds of stupidity, and cleverness is one of the worst.
The Magic MountainSo long as victory can be attained, stupid haste is preferable to clever dilatoriness.
The Art of War