Final paragraph of (typed) letter received on my birthday:
This letter is supposed to be from both of us, but you will not be surprised to hear that your mother refused point blank to have any part in composing it. However, I expect she will subject the text to an analysis similar to an exegesis of a sacred text by one of the Church fathers, so I suppose she will have an input into the content one way or another.
You should know that my mother married my father on the condition that he would undertake all her correspondence for her and she has held him to it for more than 44 years.