Every so often I get emails from the Oxford University dept of continuing education.

Seeing the range of courses available makes me realise how one could simply sit in further education ones entire life, absorbing more and more information and learning. It also makes me wonder whether I should do one or two coursse a year, just to keep the brain alive and interested in things other than science and photography (and maybe theology).

The difficulty with these things is developing the will to keep going: when a course like this is for pleasure and not necessity there is less drive to push through the dull/difficult/confusing/apparently stupid parts.