In 1856, his chance meeting with Eugène Boudin, a painter of small beach scenes, opened his eyes to the possibility of plein-air painting. From that time, with a short interruption for military service, he dedicated himself to searching for new and improved methods of painterly expression. To this end, as a young man, he visited the Paris Salon and familiarised himself with the works of older painters, and made friends with other young artists. The five years that he spent at Argenteuil, spending much time on the River Seine in a little floating studio, were formative in his study of the effects of light and reflections. He began to think in terms of colours and shapes rather than scenes and objects. He used bright colours in dabs and dashes and squiggles of paint. Having rejected the academic teachings of Gleyre's studio, he freed himself from theory, saying "I like to paint as a bird sings."