雪莱的《西风颂》原文如下：

```

O wild West Wind, thou breath of Autumn's being,

Thou, from whose unseen presence the leaves dead

Are driven, like ghosts from an enchanter fleeing,

Yellow, and black, and pale, and hectic red,

Pestilence-stricken multitudes: O thou,

Who chariotest to their dark wintry bed

The winged seeds, where they lie cold and low,

Each like a corpse within its grave, until

Thine azure sister of the Spring shall blow

Her clarion o'er the dreaming earth, and fill

（Driving sweet buds like flocks to feed in air）

With living hues and odours plain and hill:

```

这首诗是雪莱在1819年创作的，通过描绘西风的强大和不可抗拒的力量，表达了诗人对生命、希望和变革的渴望。