Ecclesiastes 1:18

1:18 For with great wisdom comes great frustration;

whoever increases his knowledge merely increases his heartache.

Ecclesiastes 5:7

5:7 Just as there is futility in many dreams,

so also in many words.

Therefore, fear God!

Ecclesiastes 11:1

Ignorance of the Future Demands Diligence in the Present

11:1 Send your grain overseas,

for after many days you will get a return.