This is the biblical book of Ecclesiastes (Qohelet), a work of Hebrew wisdom literature traditionally attributed to a king of Jerusalem — likely a literary persona of Solomon. The text's central argument is that all human endeavor — labor, wealth, pleasure, wisdom, and achievement — is "vanity" (Hebrew *hevel*, meaning breath or vapor): fleeting, purposeless, and unable to provide lasting meaning. The Preacher supports this through autobiographical reflection: having possessed extraordinary wealth, wisdom, and pleasure, he found none of it ultimately satisfying, since death equalizes wise and foolish alike and everything one builds will pass to strangers. The work is notably distinctive for its cyclical cosmology — rivers, sun, and wind repeat endlessly, history repeats, and nothing is truly new — which frames human striving as futile against an indifferent natural order. Against this bleak backdrop, the text pragmatically recommends finding joy in simple, present pleasures (eating, drinking, enjoying one's work) as gifts from God, while urging reverence toward a God whose purposes remain opaque to human understanding. Ecclesiastes stands apart from mainstream biblical optimism by honestly confronting mortality, injustice, and the limits of wisdom, making it one of the most philosophically candid books in the Hebrew Bible.