I say, I don't think the human frame is very thoughtfully constructed for this sleuthhound business. If one could go on all fours, or had eyes in ones knees, it would be a lot more practical'… 'What luck! Here's a deep, damp ditch on the other side, which I shall now proceed to fall into.' A slithering crash proclaimed that he had carried out his intention.

Clouds of Witness: And The Documents in the Case (ed. 1927)