William O. Douglas,
Davis v. United States (328 U.S. 582…
“ The difference between demanding documents without legal process and seizing them on the basis of such process, is the difference between the protection of civil liberties and their invasion. The difference is the essence of the Fourth Amendment.Indeed, so unhappy was the experience with police search for papers and articles 'in home or office,' Gouled v. United States, 255 U.S. 298, 308, 309, 41 S.Ct. 261, 264, 265, 65 L.Ed. 647, that it was once maintained that no search and seizure is valid. ”
