Wikipedia page on Shelley's poem.

Text:

MONT BLANC: LINES WRITTEN IN THE VALE OF CHAMOUNI

                             I

 
  1   The everlasting universe of things
  2   Flows through the mind, and rolls its rapid waves,
  3   Now dark--now glittering--now reflecting gloom--
  4   Now lending splendour, where from secret springs
  5   The source of human thought its tribute brings
  6   Of waters--with a sound but half its own,
  7   Such as a feeble brook will oft assume,
  8   In the wild woods, among the mountains lone,
  9   Where waterfalls around it leap for ever,
 10   Where woods and winds contend, and a vast river
 11   Over its rocks ceaselessly bursts and raves.

                               II

 
 12   Thus thou, Ravine of Arve--dark, deep Ravine--
 13   Thou many-colour'd, many-voiced vale,
 14   Over whose pines, and crags, and caverns sail
 15   Fast cloud-shadows and sunbeams: awful scene,
 16   Where Power in likeness of the Arve comes down
 17   From the ice-gulfs that gird his secret throne,
 18   Bursting through these dark mountains like the flame
 19   Of lightning through the tempest;--thou dost lie,
 20   Thy giant brood of pines around thee clinging,
 21   Children of elder time, in whose devotion
 22   The chainless winds still come and ever came
 23   To drink their odours, and their mighty swinging
 24   To hear--an old and solemn harmony;
 25   Thine earthly rainbows stretch'd across the sweep
 26   Of the aethereal waterfall, whose veil
 27   Robes some unsculptur'd image; the strange sleep
 28   Which when the voices of the desert fail
 29   Wraps all in its own deep eternity;
 30   Thy caverns echoing to the Arve's commotion,
 31   A loud, lone sound no other sound can tame;
 32   Thou art pervaded with that ceaseless motion,
 33   Thou art the path of that unresting sound--
 34   Dizzy Ravine! and when I gaze on thee
 35   I seem as in a trance sublime and strange
 36   To muse on my own separate fantasy,
 37   My own, my human mind, which passively
 38   Now renders and receives fast influencings,
 39   Holding an unremitting interchange
 40   With the clear universe of things around;
 41   One legion of wild thoughts, whose wandering wings
 42   Now float above thy darkness, and now rest
 43   Where that or thou art no unbidden guest,
 44   In the still cave of the witch Poesy,
 45   Seeking among the shadows that pass by
 46   Ghosts of all things that are, some shade of thee,
 47   Some phantom, some faint image; till the breast
 48   From which they fled recalls them, thou art there!

                               III

 
 49   Some say that gleams of a remoter world
 50   Visit the soul in sleep, that death is slumber,
 51   And that its shapes the busy thoughts outnumber
 52   Of those who wake and live.--I look on high;
 53   Has some unknown omnipotence unfurl'd
 54   The veil of life and death? or do I lie
 55   In dream, and does the mightier world of sleep
 56   Spread far around and inaccessibly
 57   Its circles? For the very spirit fails,
 58   Driven like a homeless cloud from steep to steep
 59   That vanishes among the viewless gales!
 60    Far, far above, piercing the infinite sky,
 61   Mont Blanc appears--still, snowy, and serene;
 62   Its subject mountains their unearthly forms
 63   Pile around it, ice and rock; broad vales between
 64   Of frozen floods, unfathomable deeps,
 65   Blue as the overhanging heaven, that spread
 66   And wind among the accumulated steeps;
 67   A desert peopled by the storms alone,
 68   Save when the eagle brings some hunter's bone,
 69   And the wolf tracks her there--how hideously
 70   Its shapes are heap'd around! rude, bare, and high,
 71   Ghastly, and scarr'd, and riven.--Is this the scene
 72   Where the old Earthquake-daemon taught her young
 73   Ruin? Were these their toys? or did a sea
 74   Of fire envelop once this silent snow?
 75   None can reply--all seems eternal now.
 76   The wilderness has a mysterious tongue
 77   Which teaches awful doubt, or faith so mild,
 78   So solemn, so serene, that man may be,
 79   But for such faith, with Nature reconcil'd;
 80   Thou hast a voice, great Mountain, to repeal
 81   Large codes of fraud and woe; not understood
 82   By all, but which the wise, and great, and good
 83   Interpret, or make felt, or deeply feel.

                               IV

 
 84   The fields, the lakes, the forests, and the streams,
 85   Ocean, and all the living things that dwell
 86   Within the daedal earth; lightning, and rain,
 87   Earthquake, and fiery flood, and hurricane,
 88   The torpor of the year when feeble dreams
 89   Visit the hidden buds, or dreamless sleep
 90   Holds every future leaf and flower; the bound
 91   With which from that detested trance they leap;
 92   The works and ways of man, their death and birth,
 93   And that of him and all that his may be;
 94   All things that move and breathe with toil and sound
 95   Are born and die; revolve, subside, and swell.
 96   Power dwells apart in its tranquillity,
 97   Remote, serene, and inaccessible:
 98   And this, the naked countenance of earth,
 99   On which I gaze, even these primeval mountains
100   Teach the adverting mind. The glaciers creep
101   Like snakes that watch their prey, from their far fountains,
102   Slow rolling on; there, many a precipice
103   Frost and the Sun in scorn of mortal power
104   Have pil'd: dome, pyramid, and pinnacle,
105   A city of death, distinct with many a tower
106   And wall impregnable of beaming ice.
107   Yet not a city, but a flood of ruin
108   Is there, that from the boundaries of the sky
109   Rolls its perpetual stream; vast pines are strewing
110   Its destin'd path, or in the mangled soil
111   Branchless and shatter'd stand; the rocks, drawn down
112   From yon remotest waste, have overthrown
113   The limits of the dead and living world,
114   Never to be reclaim'd. The dwelling-place
115   Of insects, beasts, and birds, becomes its spoil;
116   Their food and their retreat for ever gone,
117   So much of life and joy is lost. The race
118   Of man flies far in dread; his work and dwelling
119   Vanish, like smoke before the tempest's stream,
120   And their place is not known. Below, vast caves
121   Shine in the rushing torrents' restless gleam,
122   Which from those secret chasms in tumult welling
123   Meet in the vale, and one majestic River,
124   The breath and blood of distant lands, for ever
125   Rolls its loud waters to the ocean-waves,
126   Breathes its swift vapours to the circling air.

                               V