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
A History of the Warfare of Science with Theology in Christendom A History of the Warfare of Science with Theology in Christendom A History of the Warfare of Science with Theology in Christendom was published in two volumes by Andrew Dickson White, a founder of Cornell University, in 1896. In the introduction White states the original goal of his 1874 lecture on "The Battlefields of Science" and elaborated in a book "The Warfare of Science" the same year: In these volumes he chronicles the gradual emancipation of science from theology in various fields. The literal interpretation of Genesis, including denial of all death and of animals not of use to man