We need not resolve the difficult question of when life begins. When those trained in the respective disciplines of medicine, philosophy, and theology are unable to arrive at any consensus, the judiciary, at this point in the development of man's knowledge, is not in a position to speculate as to the answer.

This Court repeatedly has recognized that the whole subject of the domestic relations of husband and wife belongs to the laws of the States and not to the laws of the United States.

From this day forward, I no longer shall tinker with the machinery of death. For more than 20 years I have endeavored - indeed, I have struggled - along with a majority of this Court, to develop procedural and substantive rules that would lend more than the mere appearance of fairness to the death penalty endeavor. Rather than continue to coddle the Court's delusion that the desired level of fairness has been achieved and the need for regulation eviscerated, I feel morally and intellectually obligated to concede that the death penalty experiment has failed.

What the Court really has refused to recognize is the fundamental interest all individuals have in controlling the nature of their intimate associations.

Over our history there are always those who want to take this wall of separation and remove a brick here or there or damage it more than that. I think one has to be vigilant and constantly on the alert.

From this day forward, I no longer shall tinker with the machinery of death.

The Free Exercise Clause at the very least was designed to guarantee freedom of conscience by prohibiting any degree of compulsion in matters of belief. It was offended by a burden on one's religion. The Establishment Clause can be understood as designed in part to ensure that the advancement of religion comes only from the voluntary efforts of its proponents and not from support by the state. Religious groups are to prosper or perish on the intrinsic merit and attraction of their beliefs and practices.