I'm at that age where I watch such things with two minds, one that cackles at these capers and another that never gets much beyond a rather jaded and self-conscious smile, like the Mona Lisa.

I am often thought of as being remarkably bright, and yet my brains, more often than not, are busily devising new and interesting ways of bringing my enemies to sudden, gagging, writhing, agonizing death.

I had long ago discovered that when a word or formula refused to come to mind the best thing for it was to think of something else: tigers for instance or oatmeal. Then when the fugitive word was least expecting it I would suddenly turn the full blaze of my attention back onto it catching the culprit in the beam of my mental torch before it could sneak off again into the darkness.

Chicken fizz! O Lord, protect all of us who toil in the vineyards of experimental chemistry!

Although it is pleasant to think about poison at any season, there is something special about Christmas, and I found myself grinning.

I had thought for years, probably 30 or 40 years, that it would be a lot of fun to try my hand at a classic English mystery novel... I love that form very much because the reader is so familiar with all of the types of characters that are in there that they already identify with the book.

Except I'm aware that as a writer you can't get away with as much writing for children as you can with adults. Children have much more finely tuned senses of justice, morals, and ethics. They are much more Platonic: children are symmetrical, before we begin to fragment them with our own nonsensical ideas and squelch their natural joy in knowledge.