"Because neither the factual underpinnings of Roe's central holding nor our understanding of it has changed (and because no other indication of weakened precedent has been shown) the Court could not pretend to be reexamining the prior law with any justification beyond a present doctrinal disposition to come out differently from the Court of 1973. To overrule prior law for no other reason than that would run counter to the view repeated in our cases, that a decision to overrule should rest on some special reason over and above the belief that a prior case was wrongly decided. See, e.g., Mitchell v. W.T. Grant, 416 U.S. 600, 636, 94 S.Ct. 1895, 1914, 40 L.Ed.2d 406 (1974) (Stewart, J., dissenting) ("A basic change in the law upon a ground no firmer than a change in our membership invites the popular misconception that this institution is little different from the two political branches of the Government. No misconception could do more lasting injury to this Court and to the system of law which it is our abiding mission to serve"); Mapp v. Ohio, 367 U.S. 643, 677, 81 S.Ct. 1684, 1703, 6 L.Ed.2d 1081 (1961) (Harlan, J., dissenting). The examination of the conditions justifying the repudiation of Adkins by West Coast Hotel and Plessy by Brown is enough to suggest the terrible price that would have been paid if the Court had not overruled as it did. In the present case, however, as our analysis to this point makes clear, the terrible price would be paid for overruling. Our analysis would not be complete, however, without explaining why overruling Roe's central holding would not only reach an unjustifiable result under principles of stare decisis, but would seriously weaken the Court's capacity to exercise the judicial power and to function as the Supreme Court of a Nation dedicated to the rule of law. To understand why this would be so it is necessary to understand the source of this Court's authority, the conditions necessary for its preservation, and its relationship to the country's understanding of itself as a constitutional Republic."