David Kettlewell died, of heart disease, in April 2011. As he wished, this website is being maintained in memory of his ideas, and his influence on the people he met and taught. All contact details containing his name are null and void, of course, but further details on some of the pages can be obtained from his brother pkettlewell@skynet.be.
Throughout, texts have been left in the present tense, as he wrote them.