For with great wisdom comes great frustration; whoever increases his knowledge merely increases his heartache.

For wisdom provides protection, just as money provides protection. But the advantage of knowledge is this: Wisdom preserves the life of its owner.

For a man may do his work with wisdom, knowledge, and skill; however, he must hand over the fruit of his labor as an inheritance to someone else who did not work for it. This also is futile, and an awful injustice!

I tried to understand, examine, and comprehend the role of wisdom in the scheme of things, and to understand the stupidity of wickedness and the insanity of folly.

Whatever you find to do with your hands, do it with all your might, because there is neither work nor planning nor knowledge nor wisdom in the grave, the place where you will eventually go.

Not only was the Teacher wise, but he also taught knowledge to the people; he carefully evaluated and arranged many proverbs.

I thought to myself, “I have become much wiser than any of my predecessors who ruled over Jerusalem; I have acquired much wisdom and knowledge.”

For to the one who pleases him, God gives wisdom, knowledge, and joy, but to the sinner, he gives the task of amassing wealth – only to give it to the one who pleases God. This task of the wicked is futile – like chasing the wind!