English: It is the only way out of this paradoxical impasse whereby we keep hurtling forwards yet make no progress. If we don't have progress on this matter, and soon, it will have been a missed opportunity. 'A missed opportunity'. We use that phrase a lot. So often, in fact, that I think we've lost sight of what it actually means, its sense of urgency, of loss. Over the past two and a half years, opportunities have gone. Positive improvements that might have happened, have not happened. And that, for me, is the crux of Brexit. In economics, we talk about opportunity cost - that whatever action is taken has a cost in actions not taken. Every area of public spending a Government chooses to allocate money towards means other areas get less. But how do you quantify this opportunity cost: of all the things not done; of prevarication; of promises not delivered; all the reams of legislation; the funding we might have raised; operations that haven't happened; the drugs we haven't been able to purchase; the lives of European friends who might have lived among us; the kinship, friendships and relationships we might have developed with people who either have left these islands or have chosen never to come; the could and would and should; and the might-have-beens that have not been, because Brexit has taken all our attention? So yes, it will be a missed opportunity if Westminster does not act on the back of this debate and that being held by our Scottish partners. And the cost of that opportunity is more catastrophic than any hackneyed phrases - 'missed opportunities' - can ever convey. If threats of no deal were nothing more than a parlour game for the Conservative leadership in Westminster, shame on them. They've cost us more in resources, time, strain and loss of faith and goodwill than can ever be quantified. That is why this Parliament should reaffirm today its commitment to holding a people's vote as soon as is practical. If we don't, we won't have progressed at all, and what signal will that send? We should do that to put this issue to bed once and for all, and so that we can actually begin the work of dealing with the underlying reasons why this vote actually happened, securing economic regeneration and justice for people living in areas that have been left behind by the decisions of consecutive Westminster Governments. Diolch.
Welsh: Dyma'r unig ffordd allan o'r cyfyngder paradocsaidd hwn trwy ba un yr ydym ni'n parhau i wibio ymlaen ac eto yn gwneud dim cynnydd. Os nad ydym ni'n gwneud cynnydd ar y mater hwn, yn fuan, bydd yn gyfle a gollwyd. 'Yn gyfle a gollwyd'. Rydym ni'n defnyddio'r ymadrodd hwnnw gryn dipyn. Mor aml, yn wir, fel y credaf ein bod ni wedi colli golwg ar yr hyn y mae'n ei olygu mewn gwirionedd, sef ymdeimlad o frys, o golled. Dros y ddwy flynedd a hanner diwethaf, mae cyfleoedd wedi eu colli. Nid yw gwelliannau cadarnhaol a allai fod wedi digwydd, wedi digwydd. Ac, i mi, dyna graidd Brexit. Mewn economeg, rydym ni'n sôn am gost cyfle - bod gan bopeth a wneir gost o ran yr hyn na wneir. Mae pob maes o wariant cyhoeddus y mae'r Llywodraeth yn dewis dyrannu arian tuag ato yn golygu bod meysydd eraill yn cael llai. Ond sut ydych chi'n mesur cost y cyfleoedd hyn: o'r holl bethau na wnaed; o anwadalu; o addewidion na chawson nhw mo'u hanrhydeddu; yr holl bentyrrau deddfwriaeth; y cyllid y gallem ni fod wedi ei godi; gweithrediadau nad ydyn nhw wedi digwydd; y cyffuriau nad ydym ni wedi gallu eu prynu; bywydau ffrindiau Ewropeaidd sydd efallai wedi byw yn ein plith; yr ymdeimlad o berthyn, y cyfeillgarwch a'r perthnasoedd y gallem ni fod wedi eu datblygu gyda phobl sydd naill ai wedi gadael yr ynysoedd hyn neu erioed wedi dewis dod; y gallai a'r byddai a'r dylai; a'r pethau a allai fod wedi bod nad ydyn nhw wedi bod, gan fod Brexit wedi mynd â'n holl sylw? Felly bydd, bydd yn gyfle a gollwyd os nad yw San Steffan yn gweithredu ar gorn y ddadl hon a'r ddadl y mae ein partneriaid yn yr Alban yn ei chynnal. Ac mae cost y cyfle hwnnw yn fwy trychinebus nag y gall unrhyw ystrydebau - 'cyfleoedd a gollwyd' - byth eu cyfleu. Os nad oedd bygythiadau o ddim cytundeb yn ddim mwy na gêm barlwr i arweinyddiaeth y Ceidwadwyr yn San Steffan, cywilydd arnyn nhw. Maen nhw wedi costio mwy inni o ran adnoddau, amser, straen a cholli ffydd ac ewyllys da nag y gellir byth ei fesur. Dyna pam y dylai'r Senedd hon ailddatgan heddiw ei hymrwymiad i gynnal pleidlais y bobl, cyn gynted ag y bo'n ymarferol. Os nad ydym ni, ni fyddwn ni wedi symud ymlaen o gwbl, a pha arwydd y bydd hynny yn ei roi? Dylem ni wneud hynny i ddwyn y maen i'r wal ar y mater hwn unwaith ac am byth, ac fel y gallwn ni mewn gwirionedd ddechrau'r gwaith o ymdrin â'r rhesymau sylfaenol pam y digwyddodd y bleidlais hon mewn gwirionedd, gan sicrhau adfywio economaidd a chyfiawnder i bobl sy'n byw mewn ardaloedd sydd wedi eu hesgeuluso gan benderfyniadau Llywodraethau olynol yn San Steffan. Diolch.