Laudes crucis attollamus, nos qui crucis exultamus speciali gloria. Dulce melos tangat celos, dulce lignum dulci dignum credimus melodia. Voce vita non discordet; cum vox vitam non remordet, dulcis est simphonia. Servi crucis crucem laudent qui per crucem sibi gaudent vite dari munera. Dicant omnes et dicant singuli: Ave, salus totius seculi, arbor salutifera. O quam felix, quam preclara hec salutis fuit ara, rubens agni sanguine, agni sine macula qui mundavit secula ab antiquo crimine! _De cruce_, i-iv (Misset-Aubry 189) 3. Symbolism Quite as widely Adam realized the poetic possibilities of symbolism. Imagination in the middle age was stirred habitually by types. As these spoke in sculpture and glass they spoke in the hymns. Medieval symbolism sought to induce mood, to stir emotion, not by individualizing concrete details, but by familiar typical associations: lamb, vine, star of the sea. Such symbols, long ago drawn from Messianic prophecy,[51] had become both numerous and familiar. They differ essentially from the figures of the _poetriæ_ in being not decoration, not epithets or periphrases used instead of proper names, but immediate lyrical approaches. _Light_ is used, not instead of the sacred name, or of some such title as Redeemer or Savior, but to focus attention on the Light of the World. So _Cornerstone_,[52] or _Lamb_, or _Bread_, suggests redemption immediately in one aspect. So the Redeemer is seen to be foreshadowed in Isaac,[53] Joseph, or David; for medieval art sees history as the progress of the redemption of mankind. In this aspect the symbols of the Virgin Mother are lyric not merely in warmth of emotion, but in visions of human progress as divine. In turn _Bush_ burning but unburnt, _Flower_, _Fleece_ bedewed, _Star_ immemorially guiding sailors, she embodies personally hope after hope. This habitual symbolism of stone and glass and hymn is less sentimental than intellectual. While it appeals to childhood memories, it opens vistas. The surcharging of the Corpus Christi hymns does not cloud their scholastic precision. Ecce, panis angelorum, Factus cibus viatorum, Vere panis filiorum, Non mittendus canibus. In figuris præsignatur, Cum Isaac immolatur, Agnus Paschæ deputatur, Datur manna patribus. _Lauda Sion_, x; AH 50: 584. Panis angelicus fit panis hominum, Dat panis cælicus figuris terminum; O res mirabilis! Manducat Dominum Servus pauper et humilis. _Sacris sollemniis_, vi; AH 50: 587.