His The ethics of conformity and subscription, 1870 t.p. (Henry Sidgwick)
Wikipedia 18 Jan. 2014 (Henry Sidgwick (31 May 1838-28 August 1900) was an English utilitarian philosopher and economist. He was one of the founders and first president of the Society for Psychical Research, a member of the Metaphysical Society, and promoted the higher education of women. He also founded Newnham College in Cambridge in 1875.)