A greater problem to be solved was the force of inside night watchmen, of which there was an extremely complicated system. Each time I made an investigation, there seemed to have been conjured up another watchman. Finally, I found I’d have to overcome six--too many by far for me to surmount. Therefore, with the police at my beck and the burglar-alarm under control, I found myself confronted by an obstacle beyond my surmounting. It sadly injured my pride to acknowledge that I must discard the idea of looting the sub-treasury. Electricity can and will eat its way through the hardest chilled steel, high explosive will open the strongest door of a vault ever manufactured after the most ingenious plan of the master mechanic, bank clerks and night and day watchmen of easy morals can be corrupted, burglar-alarms may be put out of service by detectives like Tom Davidson and Joe Seymour of the New York City Detective Bureau, but there is one safeguard which cannot be broken down by the burglar craft, and that is Eternal Vigilance! Eternal vigilance! That safeguard, which should ever be employed by the high officials of financial institutions, is potent to combat the greatest genius possessed by a safe-burglar. Eternal vigilance should be the keynote of safety, struck in every banking house in the world, if its funds would be kept from the hands of the craft which seek ever to gain something for nothing. It was this kind of watchfulness that President Noblit of the Corn Exchange Bank of Philadelphia employed, and it saved more than three millions of dollars from my clutches and created within me a profound respect for him. I declare, with all the earnestness in me, that no shrewder plan was ever devised to loot a bank. I would have ruined it had it not been for President Noblit’s vigilance. He, and not high-class steel bolts and bars and faithful watchmen, stood between me and those millions.