STEPHEN T. ASMA: ‘In one scandalous passage of Charles Darwin’s “The Expression of Emotions in Man and Animals”, he demonstrated that four ‘defining’ characteristics of Homo sapiens – tool use, language, aesthetic sensitivity and religion ­– are all present, if rudimentary, in nonhuman animals. Even morality, he argued, arose through natural selection… Yet Darwin’s revolutionary … Continue reading United by feelings: Universal emotions are the basis of our profound affinity with other animals