Ecclesiastes (Kohelet)קהלת

Hevel havalim — breath of breaths, mistranslated "vanity": everything is vapor, exhale, Heh's own substance. The tradition's license for cosmic deflation — read publicly at Sukkot, the season of joy, precisely to keep joy honest. Under the weariness, a kabbalistic pulse: all the rivers run to the sea (Malkhut), and the sea is never full.