The Expression of the Emotions in Man and Animals the issues at play, writing: "The force of language is much aided by the expressive movements of the face and body" - hinting at a neurological intimacy of language with psychomotor function (body language),and underscoring the social value of expression. Darwin's Sources on Emotional Expression: Darwin had listened to a discussion about emotional expression at the Plinian Society in December 1826 when he was a medical student at Edinburgh University. This had been prompted by the publication of Sir Charles Bell's "Anatomy and Philosophy of Expression"; and in his presentation, the phrenologist William A.F. Browne (in a spirited account of
Animals' Rights: Considered in Relation to Social Progress Salt is undoubtedly ahead of his age by many years." A new edition of the book was published in 1980 with a preface by the Australian philosopher Peter Singer, who is well known for his work on the ethics of treatment towards animals (specifically in the book "Animal Liberation"). The 1980 reissue prompted a review from Stephen Clark who praised Salt's book with some provisos. He states that Salt's attempt to blame the treatment of non-human animals on the theological doctrine of man having "dominion" over the natural world was mistaken. Animals' Rights: Considered in Relation to Social Progress Animals'