Which details in this stanza from the poem “the wild swans at coole” provides the answer to what the speaker envies about the swans? unwearied still, lover by lover, they paddle in the cold companionable streams or climb the air; their hearts have not grown old; passion or conquest, wander where they will, attend upon them still. unwearied still, their hearts have not grown old lover by lover, companionable streams they paddle in the cold, or climb the air wander where they will