“Our government is the potent, the omnipresent teacher. For good or for ill, it teaches the whole people by its example. If the government becomes a law-breaker, it breeds contempt for law; it invites every man to become a law unto himself; it invites anarchy.”
Government Quotes, by Louis D. Brandeis , Source: part of his dissent in the case “Olmstead v. United States”, 277 U.S. 438, 485 (1928)
See Article II, Section 1, Clause 5 of the United States Constitution.