As a "man of science," Franklin is best known for his experiments with electricity, but his lifelong curiosity also led him to explore an amazing range of scientific topics. From the common cold to ocean currents, from medicine to music, and from agriculture to the aurora borealis, he believed that human logic could unlock the mysteries of the natural world. More interested in practical applications than in theory, Franklin put his ideas to work through such useful inventions as a smokeless fireplace, bifocal glasses, and the lightning rod. Franklin as an avid reader,he loved to discuss what he read. He created a number of methods to make him a better writer. This is one of his greatest interests which is writing.