According as I gave my heart to know wisdom, and to see the labor that was done upon the earth: for also in the day and in the night he saw not sleep with his eyes.
And I gave my heart to seek and to search out in wisdom concerning all which was done under the heavens: this evil business God gave to the sons of man to be occupied in it
There is one, and not a second; also a son and brother not to him: and no end to all his labor; also his eye shall not be satisfied with riches: and for whom do I labor and diminish my soul from good? Also this is vanity, and it is an evil labor.
I went round about, I and my heart., to know, and to examine, and to search out wisdom and understanding, and to know the injustice of folly, and the folly of wickedness: