The popular view that a child forgets easily is not an accurate one. Many people go right through life in the grip of an idea which has been impressed on them in very tender years.

Really, my friend! But I will not sit back and say ‘le bon Dieu has arranged everything, I will not interfere.’ Because I am convinced that le bon Dieu created Hercule Poirot for the express purpose of interfering. It is my métier.

Death, mademoiselle, unfortunately creates a prejudice. A prejudice in favour of the deceased. I heard what you said just now to my friend Hastings. ‘A nice bright girl with no men friends.’ You said that in mockery of the newspapers. And it is very true — when a young girl is dead, that is the kind of thing that is said. She was bright. She was happy. She was sweet-tempered. She had not a care in the world. She had no undesirable acquaintances. There is a great charity always to the dead. Do you know what I should like this minute? I should like to find someone who knew Elizabeth Barnard and who does not know she is dead! Then, perhaps, I should hear what is useful to me — the truth.