John Marshall Harlan II,
Mackey v. United States (401 U.S. 667…
“ I continue to believe that a proper perception of our duties as a court of law, charged with applying the Constitution to resolve every legal dispute within our jurisdiction on direct review, mandates that we apply the law as it is at the time, not as it once was. Inquiry into the nature, purposes, and scope of a particular constitutional rule is essential to the task of deciding whether that rule should be made the law of the land. ”
