My Dear “Maurice”—You will remember that afternoon in Calvados last summer when your black Persian “Minoulooshe,” who had walked behind us for a good mile, heard a wing flutter in a bramble-bush? For a long time we called her endearing names in vain. She seemed resolute to spend her night among the brambles. She had interrupted a conversation, often interrupted before, upon certain thoughts so long habitual that I may be permitted to call them my convictions. When I came back to London my mind ran again and again to those conversations and I could not rest till I had written out in this little book all that I had said or would have said. Read it some day when “Minoulooshe” is asleep.

W. B. YEATS.

May 11, 1917.