百慮一得
Meanings
1
even a fool may sometimes give good counsel
A set phrase meaning that even an ordinary person's many thoughts can occasionally yield a good idea. Used to express humility about one's own suggestion or to encourage listening to others.
My opinion may be just a lucky thought from an ordinary person, but please consider it.
As the saying goes, even a fool may sometimes give good counsel, so we should listen to everyone's opinion.