This book uncovers and explores the unrecognized impact of American pragmatism on the Oxford linguistic philosophy that thrived from the 1930s to the 1950s, made famous by Gilbert Ryle and J. L Austin. Cheryl Misak argues that Margaret Macdonald, a neglected British analytic philosopher and excellent scholar of American pragmatism, delivered core pragmatist ideas to her friend Ryle: the mind as a set of dispositions to behave; laws as 'inference tickets', and the distinction between knowing that something is true and knowing how to do something.