"A cat is the ideal literary companion. A wife, I am sure, cannot compare except to her disadvantage. A dog is out of the question. It may do at a butcher's – it would be out of place in a bookseller's. A cat for a bookseller is a different creature temperamentally from the same animal at a fishmonger's or a baker's. In these shops the cat is a useful animal – I suppose it is employed to eat fish entrails or to keep down rats and mice – but in my shop its function is that of a familiar. It is at once decorative – contemplative – philosophical, and it begets in me great calm and contentment."