Samuel Johnson (1709–1784), British author, lexicographer. Quoted in James Boswell, Life of Dr. Johnson, entry, March 31, 1772 (1791).
Johnson was referring specifically to Goldsmith's Life of Parnell. He later reiterated and qualified this statement: "They only who live with a man can write his life with any genuine exactness and discrimination; and few people who have lived with a man know what to remark about him." (Mar. 20, 1776).