Definition of "methinks"

Me thinketh accordant to resonTo tellen you al the condicionTo me it seems reasonable To tell you all the condition

1387–1400, Geoffrey Chaucer, “(please specify the story)”, in The Canterbury Tales; republished in [William Thynne], editor, The Workes of Geffray Chaucer Newlye Printed, […], [London]: […] [Richard Grafton for] Iohn Reynes […], 1542,

methinks the truth should live from age to age,

c. 1593 (date written), William Shakespeare, “The Tragedy of Richard the Third: […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i]

The lady doth protest too much, methinks.

c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene ii]

And then methought my dream changed, and two Great Giants with heading-axes came striding over the bed, […]

1862 February, George Augustus [Henry] Sala, “The Strange Adventures of Captain Dangerous; a Narrative in Plain English, […] Chapter the Fourth. My Grandmother Dies, and I am Left Alone, without So Much as a Name.”, in George Augustus Sala, editor, Temple Bar: A London Magazine for Town and Country Readers, volume IV, London: Office of "Temple Bar," 122 Fleet Street; Ward and Lock, 158 Fleet Street; New York, N.Y.: Willmer and Rogers, page 304

Dr. Tobias Funke: Methinks a cupid I shall play.

2003, “Bringing Up Buster”, in Arrested Development