Ecclesiastes 10:3 in the World English Bible
Yes also when the fool walks by the way, his understanding fails him, and he says to everyone that he is a fool.
Context
2 A wise man’s heart is at his right hand; but a fool’s heart at his left.
3 Yea also, when he that is a fool walketh by the way, his wisdom faileth him, and he saith to every one that he is a fool.
4 If the spirit of the ruler rise up against thee, leave not thy place; for yielding pacifieth great offences.