Per Amica Silentia Lunae by William Butler (W.B.) Yeats First edition 1918

London: Macmillan (1918). 8vo., original blue cloth boards, elaborately ruled and decorated to gilt on upper board and spine with a rose motif by Sturge Moore; with the original dust jacket; pp. [vi], v-94, [ii]; A very good copy. The jacket hasn't been price clipped. Slight bumping to corners and pushing to head and foot of spine. The jacket is creased in places, particularly to inner front flap and edges; spine stained and a little chipped to head and foot, and one small brown spot to lower panel. A fresh copy in the rare original dust wrapper. 
 
One of only 1500 copies printed. By 1917, the poet saw a need to explain his mystical perspective to his readers. Per Amica therefore was written by Yeats in an attempt to rectify this. Yeats called it a little philosophical book. Within the pages is his poem Ego Dominus Tuus along with a primer of his views in two parts Anima Homins and Anima Mundi.  [Lickindorf].