Midrash sur Job 12:12

— But perhaps, just as water does not rejoice the heart of one who has learned, so words of Torah do not rejoice (the heart); it is, therefore, written (Song of Songs 1:2) "for Your love is better than wine." Just as wine rejoices, so words of Torah rejoice, as it is written (Psalms 18:9) "The statutes of the L-rd are just, rejoicing the heart." And just as with wine, you taste the flavor of wine from the beginning, but the more it ages in the bottle, the more its flavor is enhanced, so, words of Torah — the older they grow in the body, the more their "flavor" is enhanced, viz. (Job 12:12) "With the aged there is wisdom, and with length of days, understanding." And just as wine is not preserved in vessels of gold or in vessels of silver, but in the basest of vessels, those of clay, so, words of Torah are preserved only in one who lowers himself.