To understand the relation of metre to the monologue, it should be held in mind that metre is far more flexible and free in dramatic than in lyric poetry. In lyric poetry it is usually more regular and partakes of the nature of song; but in dramatic poetry it is more changeable and bears more resemblance to the rhythm of speech. In the lyric, metre expresses a mood, and mood as a permanent condition of feeling necessitates a more regular rhythm; but in dramatic poetry, metre expresses the pulse-beat of one character in contact with another. It must respond to all the sudden changes of thought and feeling. The difference between the metre of Keats or Shelley or Chaucer and that of Shakespeare or of Browning is not wholly one of personality. It is often due to a difference in the theme discussed and in the spirit of their poetry. So important is the understanding of metre to the right appreciation of any exalted poetic monologue, that in general, unless the interpreter thoroughly masters the subject of metre, he is unprepared to render anything but so-called monologues on the lowest plane of farce and vaudeville art. Very close to the subject of metre is length of line. A long line is more stately, a short line more abrupt, passional, and intense. A short line in connection with longer lines, generally contains more weight, and such an increase of intensive feeling as causes its rendering to be slow, requiring about as much time as one of the longer lines. The short line suggests the necessity of a pause. It is usually found in lyric poetry; rarely in dramatic. The peculiar variation in length of line found in the Pindaric ode belongs almost entirely to lyric poetry. Monologues and dramatic poems are frequently found in blank verse. We find here a peculiar principle existing. In blank verse there is greater variation of the feet than in almost any other form of poetry, and yet in this the length of line is most fixed. In the Pindaric ode, on the contrary, where the foot is more regular, there are great variations in the length of line. Is there not discoverable here a law, that where length of line is more fixed, metre is more variable, but where length of line is more variable, the metric feet tend to be more regular? Art is "order in play"; the free, spontaneous variation is play; the fixed or regular elements give the sense of order. True art always accentuates both order and play, not in antagonistic opposition, but in sympathetic union. Whenever the order is more apparent in one direction, there is greater freedom of play in another, and the reverse. We find this principle specially manifest in pantomimic expression. Man is only free and flexible in the use of his arms and limbs when he has a stability of poise and when his movement ends in a stable attitude. There is opposition between motions and positions.