"Plainly the fruit of the victory that could most easily be gathered was the head of the king. True, he had never moved from Carisbrooke, but was he not the mainspring of the whole of this vast movement of England against the Army, its rule, even its pay? Was he not the pivot upon which all public opinion turned? Did he not embody all those courses which the Ironsides either hated or could not unravel? Was he not a trophy gained by march and battle? At a moment of great hesitancy in matters of government, when everything was fluid and uncertain, here was a supreme act which all could understand and upon which the Army could unite. The execution of Charles Stuart, "the Man of Blood," could alone satisfy the soldiers and enable their leaders to hold their obedience."
January 1, 1970
https://en.wikiquote.org/wiki/Charles_I_of_England