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 Sacrament of the Body and Blood of Christ—Against the Fanatics the Sacrament of the Altar with the correct one. Zwingli wrote that he was not placing reason over the Scriptures, but instead properly distinguishing between the human and divine natures of Christ. Since Christ's human nature could not participate in the omnipresent attribute of the divine nature, his body and blood could not be truly present in the bread and wine. Luther's characterization of him as placing reason over Scripture was therefore a straw-man argument. Luther's custom of referring to those who opposed him in non-Christian terms in "The Sacrament of the Body and Blood of Christ" sounds unusual to