Proverbs 15:2
The tongue of the wise commends knowledge, but the mouth of the fool spouts folly.

Ecclesiastes 3:22
I have seen that there is nothing better for a man than to enjoy his work, because that is his lot. For who can bring him to see what will come after him?

Ecclesiastes 5:3
As a dream comes through many cares, so the speech of a fool comes with many words.

Ecclesiastes 6:12
For who knows what is good for a man during the few days he passes through his fleeting life like a shadow? Who can tell a man what will come after him under the sun?

Ecclesiastes 7:14
In the day of prosperity be joyful, but in the day of adversity, consider this: God has made one of these along with the other, so that a man cannot discover anything that will come after him.

Ecclesiastes 8:7
Since no one knows what will happen, who can tell him what is to come?

Ecclesiastes 9:1
So I took all this to heart and concluded that the righteous and the wise, as well as their deeds, are in God's hands. Man does not know what lies ahead, whether love or hate.

Ecclesiastes 10:15
The toil of a fool wearies him, for he does not know the way to the city.