“Way” may be understood either literally (compare Ecclesiastes 10:15), or figuratively, of the course of action which he follows.
He saith ... - He exposes his folly to every one he meets.
Related Commentaries of Ecclesiastes 10:3
Ecclesiastes 10:3
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.