Abstract

I have asked that this article should be reprinted in the volume dedicated to Elizabeth Anscombe because it in particular reflects throughout my great indebtedness to her. I remember, as long ago as the late 1940s confidently referring to ‘the difference between descriptive and evaluative reasoning’ in one of the many discussions that we began to have from that time on. She, genuinely puzzled, simply asked, ‘What do you mean?’