"Love all, trust a few, do wrong to none."
--- William Shakespeare, All's Well That Ends Well

All's Well That Ends Well is a play by William Shakespeare. It is traditionally believed to have been written between 1604 and 1605, and was originally published in the First Folio in 1623.

Though originally the play was classified as one of Shakespeare's comedies, the play is now considered by some critics to be one of his problem plays, so named because they cannot be neatly classified as tragedy nor comedy. Critical comment

There is no evidence that All's Well was popular in Shakespeare's own lifetime and it has remained one of his lesser-known plays ever since, in part due to its odd mixture of fairy tale logic, gender role reversals and cynical realism. Helena's love for the seemingly unlovable Bertram is difficult to explain on the page, but in performance it can be made acceptable by casting an actor of obvious physical attraction or by playing him as a naive and innocent figure not yet ready for love although, as both Helena and the audience can see, capable of emotional growth. This latter interpretation also assists at the point in the final scene in which Bertram suddenly switches from hatred to love in just one line. This is considered a particular problem for actors trained to admire psychological realism. However, some alternative readings emphasise the "if" in his equivocal promise: "If she, my liege, can make me know this clearly, I'll love her dearly, ever, ever dearly." Here, there has been no change of heart at all. Productions like the National Theatre's 2009 run, have Bertram make his promise seemingly normally, but then end the play hand-in-hand with Helena, staring out at the audience with a look of "aghast bewilderment" suggesting he only relented to save face in front of the King.
Many critics consider that the truncated ending is a drawback, with Bertram's conversion so sudden. Various explanations have been given for this. There is (as always) possibly missing text. Some suggest that Bertram's conversion is meant to be sudden and magical in keeping with the 'clever wench performing tasks to win an unwilling higher born husband' theme of the play. Some consider that Bertram is not meant to be contemptible, merely a callow youth learning valuable lessons about values.
Many directors have taken the view that when Shakespeare wrote a comedy, he did intend there to be a happy ending, and accordingly that is the way the concluding scene should be staged. Jonathan Miller in his acclaimed BBC version in 1981 had his Bertram (Ian Charleson) give Helena a tender kiss and speak wonderingly.
It could be argued that the conditional phrasing of Bertram's surrender is possibly a comic reference to the earlier seemingly impossible tasks that he set Helena. Now he is promising to love her 'ever, ever dearly' if she fulfils the much simpler one of explaining how all this came about.
One character that has been admired is that of the old Countess of Rousillon, which Shaw thought "the most beautiful old woman's part ever written". Modern productions are often promoted as vehicles for great mature actresses; examples in recent decades have starred Judi Dench and Peggy Ashcroft, who delivered a performance of "entranc[ing]...worldly wisdom and compassion" in Trevor Nunn's sympathetic, "Chekhovian" staging at Stratford in 1982. In the BBC Television Shakespeare production she was played by Celia Johnson, dressed and posed as Rembrandt's portrait of Margaretha de Geer.
It has recently been argued that Middleton collaborated with Shakespeare on the play.