Cowley, an author not sufficiently studious of harmony, has committed the same fault:
Does with substantial blessedness abound,
And the soft wings of peace cover him round.
In these the law of metre is very grossly violated by mingling combinations of sound directly opposite to each other, as Milton expresses in his sonnet, by committing short and long, and setting one part of the measure at variance with the rest. The ancients, who had a language more capable of variety than ours, had two kinds of verse, the Iambick, consisting of short and long syllables alternately, from which our heroick measure is derived, and the Trochaick, consisting in a like alternation of long and short. These were considered as opposites, and conveyed the contrary images of speed and slowness; to confound them, therefore, as in these lines, is to deviate from the established practice. But where the senses are to judge, authority is not necessary, the ear is sufficient to detect dissonance, nor should I have sought auxiliaries on such an occasion against any name but that of Milton.
