คบคนพาลพาลพาไปหาผิด คบบัณฑิตบัณฑิตพาไปหาผล

“Keep company with a fool, and the fool leads you into wrongdoing; keep company with the wise, and the wise leads you to good results.”

The character of the people you associate with strongly shapes your own conduct and fate.

— Traditional Thailand Wisdom, Thailand

Source: Traditional Thai proverb, public-domain oral tradition