Cuchulain battling with the bitter tide" and "The Druid, grey, wood-nurtured, quiet-eyed".  
He wrote the lines, "Now all the truth is out, be secret and take defeat from any brazen throat" in one poem, while another poem by this man begins "we sat together at one summer's end, that beautiful mild woman, your close friend, and you and I, and talked of poetry".  In addition to "To a Friend Whose Work Has Come to Nothing" and "Adam's Curse", this author pleaded "May she be granted beauty, and yet not beauty to make a stranger's eye distraught" in one work, and in another discussed "Cuchulain battling with the bitter tide" and "The Druid, grey, wood-nurtured, quiet-eyed".  This author of "A Prayer For My Daughter" and "To the Rose Upon the Rood of Time" is more well-known for a poem which describes how "a shudder in the loins engenders...the broken wall, the burning roof and tower and Agamemnon dead" and one that begins "turning and turning in the widening gyre, the falcon cannot hear the falconer".  For 10 points—name this author of "Leda and the Swan" and "The Second Coming".
He wrote the lines, "Now all the truth is out, be secret and take defeat from any brazen throat" in one poem, while another poem by this man begins "we sat together at one summer's end, that beautiful mild woman, your close friend, and you and I, and talked of poetry".  
William Butler {Yeats}