In The Hand, the first volume of his trilogy, Raymond Tallis looked at how humans have overcome the constraints of biology. The second volume, I Am, focused on two crucial aspects of the escape from being a mere organism: selfhood and agency. This, the final volume in the trilogy, argues that knowledge is unique to human beings and sufficiently important to call man 'the knowing animal'.Raymond Tallis examines the profound difference between knowledge 'That things are the case' and mere sentience. He criticises both accounts of knowledge that marginalise the consciousness of the knower and naturalistic accounts that assimilate knowledge to sense experience and, ultimately, neural activity. He argues that knowledge arises because humans are embodied subjects and not just organisms: knowing subjects know both about events in the material world which they can perceive as well as non-material 'facts'. It is because knowledge is relatively 'uncoupled' from the material world that active inquiry, reason-d