- Spencer was born on April 27th, 1820 in Derby, Derbyshire, England. He died on December 8th, 1903 (age 83) in Brighton, Sussex, England.
- Spencer developed a widely accepted concept of evolution which was how the physical world developed. This contributed to the Theory of Evolution because it was the first concept of evolution. He wrote about evolution before Darwin.
- Spencer most well known publication is "Survival of the fittest," (1864)
- Spencer was a polymath, a person who has expertise on a vast amount of subjects, so he has contributions to a vast amount of subjects including; ethics, religion, anthropology, economics, political theory, philosophy, literature, biology, sociology, and psychology,