Emotion in animals specialised form of Occam's razor used in ethology, in which he stated: Charles Darwin initially planned to include a chapter on emotion in "The Descent of Man" but as his ideas progressed they expanded into a book, "The Expression of the Emotions in Man and Animals". Darwin proposed that emotions are adaptive and serve a communicative and motivational function, and he stated three principles that are useful in understanding emotional expression: First, "The Principle of Serviceable Habits" takes a Lamarckian stance by suggesting that emotional expressions that are useful will be passed on to the offspring. Second, "The Principle of
The Man Who Wrote Frankenstein Hunt, as well as the "nature of the manuscript evidence", showed that the work was "conceived and mainly written by Mary Shelley". 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