Solomon
Ecclesiastes 10:13BSB·traditional attribution

The beginning of his talk is folly, and the end of his speech is evil madness.

Matthew Henry Presbyterian @wholebiblehenry

Solomon, having shown the benefit of wisdom, and of what great advantage it is to us in the management of our affairs, here shows the mischief of folly and how it exposes men, which perhaps comes in as a reflection upon those rulers who set folly in great dignity. I.

Commenting on Ecclesiastes 10:12-15

John Gill Reformed Baptist @doctorgill

The beginning of the words of his mouth is foolishness,.... As soon as ever he opens his mouth, he betrays his folly; the first word he speaks is a foolish one; or it is from the abundant folly in his heart that he speaks, which is the source and spring of all his foolish talk; and the end of his talk is mischievous madness; to...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Illustrating the folly and injuriousness of the fool's words; last clause of Ecc 10:12.