“Change based on principle is progress. Constant change without principle becomes chaos.”
                                        
                                        Address at the Cow Palace on Accepting the Nomination of the Republican National Convention (August 23, 1956). Source: Eisenhower Presidential Library.  Archived https://web.archive.org/web/20210125121539/https://www.eisenhowerlibrary.gov/eisenhowers/quotes from the  original https://www.eisenhowerlibrary.gov/eisenhowers/quotes on Janunary 25, 2021. 
1950s