I applied my mind to seek and to search out by wisdom all that is done under heaven; it is an unhappy business that God has given to humans to be busy with.
I turned my mind to know and to search out and to seek wisdom and the sum of things and to know that wickedness is folly and that foolishness is madness.
the case of solitary individuals, without sons or brothers; yet there is no end to all their toil, and their eyes are never satisfied with riches. “For whom am I toiling,” they ask, “and depriving myself of pleasure?” This also is vanity and an unhappy business.