Never give all the heart, for love Will hardly seem worth thinking of To passionate women if it seem Certain, and they never dream That it fades out from kiss to kiss For everything that's lovely is But a brief, dreamy kind delight.
William Butler Yeats (1865 - 1939)
Source: the Seven Woods, 1904. Never Give All the Heart
Once out of nature I shall never take My bodily form from any natural thing, But such a form as Grecian goldsmiths make Of hammered gold and gold enameling To keep a drowsy Emperor awake; Or set upon a golden bough to sing To lords and ladies of Byzantium Of what is past, or passing, or to come.