Book The Second: Riches Chapter 13 The Progress of an Epidemic

That it is at least as difficult to stay a moral infection as a physical
one; that such a disease will spread with the malignity and rapidity of
the Plague; that the contagion, when it has once made head, will spare
no pursuit or condition, but will lay hold on people in the soundest
health, and become developed in the most unlikely constitutions: is
a fact as firmly established by experience as that we human creatures
breathe an atmosphere.

A blessing beyond appreciation would be conferred
upon mankind, if the tainted, in whose weakness or wickedness these
virulent disorders are bred, could be instantly seized and placed in
close confinement (not to say summarily smothered) before the poison is
communicable.

As a vast fire will fill the air to a great distance with its roar, so
the sacred flame which the mighty Barnacles had fanned caused the air to
resound more and more with the name of Merdle. It was deposited on every
lip, and carried into every ear.

There never was, there never had
been, there never again should be, such a man as Mr Merdle. Nobody,
as aforesaid, knew what he had done; but everybody knew him to be the
greatest that had appeared.

Down in Bleeding Heart Yard, where there was not one unappropriated
halfpenny, as lively an interest was taken in this paragon of men as on
the Stock Exchange. Mrs Plornish, now established in the small grocery
and general trade in a snug little shop at the crack end of the Yard,
at the top of the steps, with her little old father and Maggy acting
as assistants, habitually held forth about him over the counter in
conversation with her customers.