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Such was his influence that le Carre was credited by the Oxford English Dictionary with introducing espionage terms such as “mole”, “honey pot” and “pavement artist” to popular English usage.

He was a pavement artist and he had a pitch outside the railings of the great terminus in Euston Road, where he used to sit and patronise London.

It is a loathsome idea to think that a man of the type of Sargent is of the same noble profession as the pavement artist.

Because there is a decadent art about, one need not make a hero of the pavement artist.

What is more, in themselves they are as feeble and commonplace as the drawing of a pavement artist, which, in fact, they resemble.