Louis Pasteur was born on December 27, 1822. He was an international figure in scientific and medical research and the founder of the Institut Pasteur (Paris) in 1887. Louis Pasteur was a precursor of a certain way of conducting research, deeply concerned with its goals, both humanistic and universal, and the need to train and transmit this approach and these values to future generations. Today, this "Pasteur spirit" still inspires scientists who work in the institute that bears his name (Institut Pasteur), as well as those in the wider Pasteur Network.