Billy Collins distinguishes himself through his clear, accessible poetry–and by reinterpreting many traditional poetic forms. His poem "Sonnet" begins "All we need is fourteen lines, well, thirteen now." Collins speaks out against the over-interpretation of poetry, as well as the writing of poetry strictly for an academic audience. As United States Poet Laureate (2001-03), he created a poetry collection called "Poetry 180," a project whose aim was to increase poetry's popularity among teens by exposing them to a meaningful contemporary poem each day of the school year. Although its accessibility is in part responsible for the popularity of Collins's work, humor, irony, and ambiguity also play an important role. The poet Stephen Dunn once wrote of Collins's appeal, "We seem to always know where we are in a Billy Collins poem, but not necessarily where he is going."