It is a pity he did not write in pencil. As you have no doubt frequently observed, the impression usually goes through -- a fact which has dissolved many a happy marriage.

It seems that the Parisian Oulipo group has recently constructed a matrix of all possible murder-story situations and has found that there is still to be written a book in which the murderer is the reader.Moral: there exist obsessive ideas, they are never personal; books talk among themselves, and any true detection should prove that we are the guilty party.

Miss Climpson," said Lord Peter, "is a manifestation of the wasteful way in which this country is run. Look at electricity, Look at water-power. Look at the tides. Look at the sun. Millions of power units being given off into space every minute. Thousands of old maids, simply bursting with useful energy, forced by our stupid social system into hydros and hotels and communities and hostels and posts as companions, where their magnificent gossip-powers and units of inquisitiveness are allowed to dissipate themselves or even become harmful to the community, while the ratepayers' money is spent on getting work for which these women are providentially fitted, inefficiently carried out by ill-equipped policemen like you.

Armed neutrality makes it much easier to detect hypocrisy.

I sleuth, you know. For a hobby. Harmless outlet for natural inquisitiveness, don't you see, which might otherwise strike inward and produce introspection an' suicide. Very natural, healthy pursuit -- not too strenuous, not too sedentary; trains and invigorates the mind.

Very strange things comes to our knowledge in families, miss; bless your heart, what you would think to be phenomenons, quite ... Aye, and even in gen-teel families, in high families, in great families ... and you have no idea ... what games goes on!

Ionizing smoke detectors unnaturally raise the background radiation levels in the human environment.

It has often been said that the more unusual the murder the easier it is to solve, but this is a theory I don't believe. Nothing is easy, nothing is simple, and you should think of your investigations as a complicated experiment: look at what remains constant and look at what changes, ask the right questions and don't be afraid of wrong answers, and above all rely on observation and rely on experience.

Generally he knew by instinct the likely length of an investigation, but on this occasion he did not: as he fought to get his breath he suddenly saw himself as others must see him, and he was struck by the impossibility of his task. The event of the boy's death was not simple because it was not unique and if he traced it backwards, running the time slowly in the opposite direction (but did it have a direction?), it became no clearer. The chain of causality might extend as far back as the boy's birth, in a particular place and on a particular date, or even further into the darkness beyond that. And what of the murderer, for what sequence of events had drawn him to wander by this old church? All these events were random and yet connected, part of a pattern so large that it remained inexplicable. He might, then, have to invent a past from the evidence available - and, in that case, would not the future also be an invention? It was as if he were staring at one of those puzzle drawings in which foreground and background create entirely different images: you could not look at such a thing for long.

To let the brain work without sufficient material is like racing an engine. It racks itself to pieces.

Lockwood gave a sudden exclamation; when I looked at him, his eyes were shining. 'On second thoughts, we can scrap my last suggestion,' he said. 'Stuff the mingling. Who wants to do that? Boring. George - this library. Where is it?

There is nothing more deceptive than an obvious fact.

Beyond the obvious facts that he has at some time done manual labour, that he takes snuff, that he is a Freemason, that he has been in China, and that he has done a considerable amount of writing lately, I can deduce nothing else.

The affair seems absurdly trifling, and yet I dare call nothing trivial when I reflect that some of my most classic cases have had the least promising commencement. You will remember, Watson, how the dreadful business of the Abernetty family was first brought to my notice by the depth which the parsley had sunk into the butter upon a hot day.