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.
William J. BrennanThe calculated killing of a human being by the state involves, by its very nature, an absolute denial of the executed person's humanity. The most vile murder does not, in my view, release the state from constitutional restraint on the destruction of human dignity.
William J. BrennanIf there is a bedrock principle underlying the First Amendment, it is that the government may not prohibit the expression of an idea simply because society finds the idea itself offensive or disagreeable.
William J. Brennan