"Harry Blackmun replied to Powell five days later in a previously unquoted private letter that ironically reveals how highly reluctant Roe's author was to extend the ruling to the point that the Court's actual decision indeed reached: I have no particular commitment to the point marking the end of the first trimester as contrasted with some other point, such as quickening or viability. I selected the earliest of the three because medical statistics and the statistical writings seemed to focus on it and to draw their contrasts between the first three months and the remainder of the pregnancy. In addition, I thought it might be easier for some of the justices than a designated later point. I could go along with viability if it could command a court. By that time the state's interest has grown large indeed. I suspect that my preference, however, is to stay with the end of the first trimester for the following reasons: (1) It is more likely to command a court. (2) A state is still free to make its decisions on the liberal side and fix a later point in the abortion statutes it enacts. (3) I may be wrong, but I have the impression that many physicians are concerned about facilities and, for example, the need of hospitalization, after the first trimester. I would like to leave the states free to draw their own medical conclusions with respect to the period after three months and until viability. The states' judgments of the health needs of the mother, I feel, ought, on balance, to be honored. I would be willing to state, either in the opinion or in a footnote, what is essentially the obvious--namely, that a state is free to leave the decision to the attending physician and to regulate at a later date than the end of the first trimester."