Psmith in the City by P.G. Wodehouse

When Psmith finds himself working in the City for the pompous Mr. Bickersdyke, he makes it his mission to bring a little sweetness and light into the bank manager’s life. The monocled wit with the suave manner and the chivalrous but devil-may-care attitude to life is determined not to let honest toil depress him. The consequence is a series of battles in which Bickersdyke comes off worst and Wodehouse’s readers best.