Church and State William Butler Yeats

HERE is fresh matter, poet,
Matter for old age meet;
Might of the Church and the State,
Their mobs put under their feet.
O but heart's wine shall run pure,
Mind's bread grow sweet.
That were a cowardly song,
Wander in dreams no more;
What if the Church and the State
Are the mob that howls at the door!
Wine shall run thick to the end,
Bread taste sour.