Venting my spleen

Henry the 6th

“I cannot say much for this Monarch’s Sense-Nor would I if I could, for he was a Lancastrian. I suppose you know all about the Wars between him and the Duke of York who was of the right side; If you do not, you had better read some other History, for I shall not be very diffuse in this, meaning only to vent my Spleen against, and show my Hatred to all those people whose parties or principles do not suit with mine, and not to give information.”

from The History of England “By a partial, prejudiced, and ignorant Historian.”