The extract is taken from the poem "Sailing To Byzantium" by William Butler Yeats. The poet was in his early sixties when he wrote this poem in 1927.
<em>The lines </em>
<em>"Caught in that sensual music all neglect </em>
<em>Monuments of unageing intellect." </em>
speaks about the worldly pleasures(compared with "music") that last only for a few minutes and intellect (compared with the "monuments") that last long.