Macbeth shall never vanquished be, until
Great Birnam wood to high Dunsinane Hill
Shall come against him.
—WILLIAM SHAKESPEARE, MACBETH
Nature, with equal mind,
Sees all her sons at play;
Sees man control the wind,
The wind sweep man away.
—MATTHEW ARNOLD
We should forgive our enemies, but not before they are hanged.
—HEINRICH HEINE