Aaron Klug

However, I should perhaps add that during the 20 years I have been back in Cambridge, I have been actively involved in the teaching of undergraduates, as well as of course supervising research students.

When a herd of cattle see a strange object, they are not satisfied till each one has sniffed it; and the horse is cured of his fright at the robe, or the meal-bag, or other object, as soon as he can be induced to smell it. There is a great deal of speculation in the eye of an animal, but very little science.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.