by Herbert Spencer at Reading Rat
Criticism (articles, essays, reviews):
...Hofstadter [Richard Hofstadter in Social Darwinism in American Thought (1944)], repeatedly points to Spencer's famous phrase, "survival of the fittest," a line that Charles Darwin added to the fifth edition of Origin of Species. But by fit, Spencer meant something very different from brute force.
Man with a Plan: Herbert Spencer’s theory of everything, by Steven Shapin, The New Yorker, August 13, 2007
The Gospel of Relaxation, by Carl Rollyson, New York Sun, July 25, 2007, review of Herbert Spencer and the Invention of Modern Life, by Mark Francis