Dissenting, Olmstead v. United States, 277 U.S. 438, 479 (1928). The last sentence is one of many quotations inscribed on Cox Corridor II, a first floor House corridor, U.S. Capitol. 
Judicial opinions 
Context: The defendants' objections to the evidence obtained by wire-tapping must, in my opinion, be sustained. It is, of course, immaterial where the physical connection with the telephone wires leading into the defendants' premises was made. And it is also immaterial that the intrusion was in aid of law enforcement. Experience should teach us to be most on our guard to protect liberty when the government's purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.
                                    
Louis Brandeis: Liberty
Louis Brandeis was American Supreme Court Justice. Explore interesting quotes on liberty.
                                        
                                        Dissent, Liggett Co. v. Lee, 288 U.S. 517 (1933), at 580. 
Judicial opinions
                                    
                                        
                                        Dissent, Burdeau v. McDowell, 256 U.S. 465, 477 (1921). 
Judicial opinions
                                    
                                        
                                        Dissenting, Olmstead v. United States, 277 U.S. 438 (1928). 
Judicial opinions
                                    
                                        
                                        Concurring, Whitney v. California, 274 U.S. 357 (1927). 
Judicial opinions
                                    
                                        
                                        Can it be that the Constitution affords no protection against such invasions of individual security? 
Dissenting, Olmstead v. United States, 277 U.S. 438 (1928). 
Judicial opinions
                                    
                                        
                                        Concurring, Whitney v. California, 274 U.S. 357, 375 (1927), at 375. In this case, in which the Court upheld a California anti-Communist statute, Brandeis, writing in a concurrence joined by Justice Oliver Wendell Holmes, Jr., concurred in the judgment but not in the reasoning. Whitney was later overruled (with the later Court adopting Brandeis's reasoning) in Brandenburg v. Ohio, 395 U.S.  444 (1969). 
Judicial opinions
                                    
                                        
                                        “True Americanism” (1915). 
Extra-judicial writings