While the machinery of law enforcement and indeed the nature of crime itself have changed dramatically since the Fourth Amendment became part of the Nation's fundamental law in 1791, what the Framers understood then remains true today - that the task of combating crime and convicting the guilty will in every era seem of such critical and pressing concern that we may be lured by the temptations of expediency into forsaking our commitment to protecting individual liberty and privacy.

Our amended Constitution is the lodestar for our aspirations. Like every text worth reading, it is not crystalline. The phrasing is broad and the limitations of its provisions are not clearly marked. Its majestic generalities and ennobling pronouncements are both luminous and obscure. This ambiguity of course calls forth interpretation, the interaction of reader and text. The encounter with the Constitutional text has been, in many senses, my life's work.

We hold that the Constitution does not forbid the states minor intrusions into an individual's body under stringently limited conditions.

Perhaps the bleakest fact of all is that the death penalty is imposed not only in a freakish and discriminatory manner, but also in some cases upon defendants who are actually innocent.

Our statute books gradually became laden with gross, stereotyped distinctions between the sexes and, indeed, throughout much of the 19th century the position of women in our society was, in many respects, comparable to that of blacks under the pre-Civil War slave codes.

It is tempting to pretend that minorities on death row share a fate in no way connected to our own, that our treatment of them sounds no echoes beyond the chambers in which they die. Such an illusion is ultimately corrosive, for the reverberations of injustice are not so easily confined.

If our free society is to endure, and I know it will, those who govern must recognize that the Framers of the Constitution limited their power in order to preserve human dignity and the air of freedom which is our proudest heritage.