He stayed in London nearly eighteen months. It turned out to be as easy for him to find a job here as in Philadelphia. Part of the time he worked for a printer named Palmer and after that for a Mr. Watt. Under the tutelage of experienced workmen, he perfected his printing skills. He also attempted to improve his colleagues by urging them to drink water instead of beer for breakfast. The “Water American,” they dubbed him, but a few of them followed his advice. Not that he was a prude. London had much to offer a young man who was curious and alert and full of fun. There were operas in French or Italian, plays by William Shakespeare at the Drury Lane Theatre, scientific lectures, and the lure of dance halls. He wrote a pamphlet called “A Dissertation on Liberty and Necessity, Pleasure and Pain,” which brought him some acclaim among London’s young intellectuals. He presented an American curiosity, a purse of stone asbestos, to Sir Hans Sloane, secretary of the Royal Society, and almost met Sir Isaac Newton. James Ralph borrowed money from him and then split up with him without paying him back, in a quarrel over a pretty milliner. He sent off one letter to Deborah Read, but never got around to writing another. He could not have missed observing the squalor of the slums and the contrasting elegance of the great lords with their postilions and liveried coachmen. That no such vast difference existed between rich and poor in America may have struck him, but he drew no moral lesson. He was not yet a crusader and his heart was set on having as good a time as his means allowed. On occasion he went swimming in the Thames with a co-worker named Wygate, and once on an excursion to Chelsea he dazzled Wygate and his other companions with a display of the water exercises which he had invented in his childhood. A certain Sir William Wyndham, a friend of the great Jonathan Swift, heard of his prowess and invited him to teach swimming to his sons. About the same time, Wygate proposed that the two of them travel through Europe, earning their way as journeymen printers. Both suggestions tempted Benjamin but he rejected them. His Quaker friend Thomas Denham had offered him a position in his Philadelphia importing company. Denham had made one fortune as a merchant and was set on making another. With the crying need of America’s growing population for goods from abroad, there was no reason why he should not succeed. The salary was less than Franklin earned as a printer, but there would be handsome commissions, travel to foreign lands, and, so he believed, an assured future. He set sail on July 23, 1726, on the _Berkshire_. It was October 11 before they reached Philadelphia. Franklin, now twenty, kept a journal on this long voyage. He had time to think, to observe nature, to philosophize.