Read this excerpt and complete the sentences that follow. A Shropshire Lad by A. E. Housman (excerpt) When I was one-and-twenty I heard a wise man say, "Give crowns and pounds and guineas But not your heart away; Give pearls away and rubies But keep your fancy free." But I was one-and-twenty, No use to talk to me. When I was one-and-twenty I heard him say again, "The heart out of the bosom Was never given in vain; 'Tis paid with sighs a plenty And sold for endless rue." And I am two-and-twenty, And oh, 'tis true, 'tis true. The central theme of the poem is . In the end, the poet the wise man's views.