Has an auditor's duty changed all that much in over a century?
"It is the duty of an auditor to bring to bear on the work he has to perform that skill, care and caution which a reasonably careful, cautious auditor would use. What is reasonable skill, care and caution must depend on the particular circumstances of each case. An auditor is not bound to be a detective, or, as was said to approach his work with suspicion, or with a foregone conclusion that there is something wrong. He is a watchdog not a bloodhound. He is justified in believing tried servants of the company in whom confidence is placed by the company. He is entitled to assume that they are honest and rely upon their representations, provided he takes reasonable care."