Enjambment at its best guides us into unexpected places; it slides an element of surprise and wonder into the rightward-downward regularity of poetic lineation.
I was left unsure, for instance, whether the enjambments (lines breaking partway through phrases) were always for artistic effect or sometimes just resorted to.
Enjambment tends to increase the pace of the poem, whereas end-stopped lines, which are lines that break on caesuras (pauses), emphasize these silences and slow the poem down.