“If it is not necessary to change, it is necessary not to change.”
Benjamin Disraeli (1804–1881) British Conservative politician, writer, aristocrat and Prime Minister
Attributed to Edmund Burke, to William Gerard Hamilton, to George Bernard Shaw, to John F. Kennedy (who quoted it) and to Benjamin Disraeli, it was actually said by Lucius Cary, 2nd Viscount Falkland in a speech in the House of Commons on 1641-11-22.
Misattributed