Read it through once

What spell or what charm (For, a while there was trouble within me), what next should I urge To sustain him where song had restored him?--Song filled to the verge {130} His cup with the wine of this life, pressing all that it yields Of mere fruitage, the strength and the beauty: beyond, on what fields, Glean a vintage more potent and perfect to brighten the eye And bring blood to the lip, and commend them the cup they put by? He saith, “It is good”; still he drinks not: he lets me praise life, Gives assent, yet would die for his own part.