Sudden a thought came like a full-blown rose, Flushing his brow, and in his pained heart Made purple riot. - John Keats

There was an awful rainbow once in heaven:
We know her woof, her texture; she is given
In the dull catalogue of common things.
Philosophy will clip an Angel's wings,
Conquer all mysteries by rule and line,
Empty the haunted air, and gnomed mine — Unweave a rainbow, as it erewhile made
The tender-person'd Lamia melt into a shade.

We hate poetry that has a palpable design upon us — and if we do not agree, seems to put its hand in its breeches pocket. Poetry should be great and unobtrusive, a thing which enters into one's soul, and does not startle or amaze with itself, but with its subject.

I stood tip-toe upon a little hill,
The air was cooling, and so very still,
That the sweet buds which with a modest pride
Pull droopingly, in slanting curve aside,
Their scantly leaved, and finely tapering stems,
Had not yet lost those starry diadems
Caught from the early sobbing of the morn.