In this illuminating and entertaining biography David Knight draws upon Humphry Davy's poetry, notebooks and informal writings to introduce us to one of the first professional scientists. Davy is best remembered for his work on laughing gas, for the arc lamp, for isolating sodium and potassium, for his theory that chemical affinity is electrical and, of course, for his safety lamp. His lectures on science made the fortunes of the Royal Institution in London, and he taught chemistry to the young Faraday. He is also recognized for his poetry and was the friend of Coleridge, Wordsworth and Byron. By investigating Davy's life Knight shows what it was like to be a creative scientist in Regency England, demonstrating the development of science and its institutions during this crucial period in history.