Inability to sue. 5 Bell, App. Cas. 172. Non valet conflrmatio, nisi ille, qui eonflrmat, sit, in possessione rei vel juris undo fieri debet conflrmatio; et eo dem modo, nisi ille oni conflrmatio fit sit in possessione. Co. Litt. 295. Confirmation is not valid unless he who confirms is either in possession of the thing itself or of the right of which confirmation is to be made, and, in like manner, unless he to whom confirmation is made is in possession. Non valet exceptio ejnsdem rei en jus petitnr dissolntio. A plea of the same matter the dissolution of which is sought, is not valid. Called a “maxim of law and common sense.” 2 Eden, 134. Non valet intpedimentnm quod de jure non sortitnr effectum. 4 Coke, 31a. An impediment which does not derive its effect from law is of no force. Non verbis, sed ipsis rebus, leges im ponimus. Cod. 6, 43, 2. We impose laws, not upon words, but upon things themselves. Non videntur qui errant consentire. They are not considered to consent who commit a mistake. Dig. 50, 17, 116,