Human uses of mammals that "one is well advised to study the behaviour rather than attempting to get at any underlying emotion". Charles Darwin however had accepted the idea of emotion in animals, writing his 1872 book "The Expression of the Emotions in Man and Animals" on the subject. Darwin believed that mammals had social, mental and moral lives. In "The Descent of Man" (1871), he wrote: "There is no fundamental difference between man and the higher mammals in their mental faculties." Biologists remained wary of the idea, even for the great apes, but this led to serious difficulties, as Donald O. Hebb explained
The Man Who Wrote Frankenstein The Man Who Wrote Frankenstein The Man Who Wrote Frankenstein is a 2007 book written and published by John Lauritsen, in which the author argues that the poet Percy Bysshe Shelley, not his wife Mary Shelley, is the real author of "Frankenstein" (1818), that the novel "has consistently been underrated and misinterpreted", and that its dominant theme is "male love". Lauritsen maintains that handwriting cannot be used to determine the actual author of "Frankenstein". His work received positive reviews in gay publications. However, some commentators in other publications rejected Lauritsen's views and supported the conventional view that "Frankenstein" was written