Charlie, by contrast, understood very little—at least in Mma Makutsi’s view. He had been an apprentice in the garage, but had lost his job when Mr. J.L.B. Matekoni had been obliged to cut staff. That had been done only when all other avenues had been explored; money was tight, and many cars were now being taken to the larger garages where their complicated needs could be addressed by specialist equipment.

“They are not making cars for people any longer,” said Mr. J.L.B. Matekoni. “They are making them for computers. If something goes wrong, they just take out the part and throw it away. Nobody can fix anything these days.”

Charlie had his faults. He was impetuous, being given to making inflammatory remarks in the presence of Mma Makutsi, and his thoughts seemed to dwell almost exclusively on girls. In spite of all this, though, Mma Ramotswe had been unwilling to see him cast adrift and had employed him in the agency as what Mma Makutsi insisted on calling a Junior Probationary Apprentice Detective. Her insistence on this humiliating title rankled with Charlie, but he was grateful for such scraps of status as the job gave him, and even Mma Makutsi had to admit that he was making an effort. There was a long way to go, though, and she was watching him.

Those, then, were the categories of friends and colleagues. That left those who were neither friends nor colleagues, a group that in turn was divided into those who were simply unknown—people who clearly existed but who had yet to be met—and those who were known. It was this last set that was most delicate and troublesome, as it embraced those whom some might assume were enemies. That was not a word that Mma Ramotswe liked. She did not think of others in this way, as from an early age she had been imbued with the message that one should love one’s enemies, and if one loved one’s enemies then surely they ceased to be enemies. That message of love had been taught at Sunday School in Mochudi, when, along with thirty other children, the young Precious Ramotswe had been taught to recite the precepts of the good life. You respected your father and mother, along with a large number of others including teachers, elderly people, government officials, and policemen. You were not greedy, envious, or impatient, although you might feel all of these with some regularity. You never cast the first stone nor did you notice the mote in your neighbour’s eye when you so clearly had a plank in your own. And of course you forgave your enemies.