Terry Pratchett has early onset Alzheimer's, which is incredibly sad on more than one level.

As a person who considers himself creative and imaginative and at least a little bit intelligent; as a person who exists most of the time within the confines of his mind, and as a person who hates being dependant or burdensome, this awful disease probably rates as one of my biggest fears. This news reiterates the fact that I must make sure I do all the things I want to do, creatively, artistically and intellectually, before its too late. Could someone keep reminding me of this?