A vain man is lifted up in arrogance, and he thinks that he is born free like a wild ass’s colt
Other versions
King James Version
For vain man would be wise, though man be born like a wild ass's colt. English Standard Version
But a stupid man will get understanding when a wild donkey's colt is born a man!New International Version
But a witless man can no more become wise than a wild donkey's colt can be born a man.