Some lovely choices here already. Two of my favourites are:
Dover Beach, by Matthew Arnold:
The sea is calm to-night.
The tide is full, the moon lies fair
Upon the straits; on the French coast the light
Gleams and is gone; the cliffs of England stand;
Glimmering and vast, out in the tranquil bay.
Come to the window, sweet is the night-air!
Only, from the long line of spray
Where the sea meets the moon-blanched land,
Listen! you hear the grating roar
Of pebbles which the waves draw back, and fling,
At their return, up the high strand,
Begin, and cease, and then again begin,
With tremulous cadence slow, and bring
The eternal note of sadness in.
Sophocles long ago
Heard it on the A gaean, and it brought
Into his mind the turbid ebb and flow
Of human misery; we
Find also in the sound a thought,
Hearing it by this distant northern sea.
The Sea of Faith
Was once, too, at the full, and round earth's shore
Lay like the folds of a bright girdle furled.
But now I only hear
Its melancholy, long, withdrawing roar,
Retreating, to the breath
Of the night-wind, down the vast edges drear
And naked shingles of the world.
Ah, love, let us be true
To one another! for the world, which seems
To lie before us like a land of dreams,
So various, so beautiful, so new,
Hath really neither joy, nor love, nor light,
Nor certitude, nor peace, nor help for pain;
And we are here as on a darkling plain
Swept with confused alarms of struggle and flight,
Where ignorant armies clash by night.
and also
The Sun Rising, by John Donne:
Busy old fool, unruly Sun,
Why dost thou thus,
Through windows, and through curtains, call on us?
Must to thy motions lovers' seasons run?
Saucy pedantic wretch, go chide
Late schoolboys, and sour prentices,
Go tell court-huntsmen that the king will ride,
Call country ants to harvest offices,
Love, all alike, no season knows, nor clime,
Nor hours, days, months, which are the rags of time.
Thy beams, so reverend and strong
Why shouldst thou think?
I could eclipse and cloud them with a wink,
But that I would not lose her sight so long:
If her eyes have not blinded thine,
Look, and tomorrow late, tell me
Whether both the'Indias of spice and mine
Be where thou leftst them, or lie here with me.
Ask for those kings whom thou saw'st yesterday,
And thou shalt hear: "All here in one bed lay."
She'is all states, and all princes I,
Nothing else is.
Princes do but play us; compar'd to this,
All honour's mimic, all wealth alchemy.
Thou, sun, art half as happy'as we,
In that the world's contracted thus;
Thine age asks ease, and since thy duties be
To warm the world, that's done in warming us.
Shine here to us, and thou art everywhere;
This bed thy centre is, these walls, thy sphere.