There would be little virtue or finality in verdicts if they could be impeached and overthrown by the evidence of jurors and litigants. It has been said that such a situation would result in perjury and bribery and there would be no end to litigation in cases tried before juries. ( State v. Buseman, 124 Kan. 496, 499, 260 P. 641; Ohlson v. Power Co., 105 Kan. 252, 254, 182 P. 393; Jones v. Webber, 111 Kan. 650, 652, 207 P. 837; Henderson v. Deckert, 160 Kan. 386, 162 P.2d 88; Newell v. City Ice Co., 140 Kan. 110, 112, 113, 34 P.2d 558; Anderson v. Thompson, 137 Kan. 754, 22 P.2d 438; Hurley v. Painter, 182 Kan. 731, 736, 324 P.2d 142.) In Anderson v. Thompson, supra, 758, Mr. Justice Rousseau Burch, speaking for the court, said: