Physics of life : lecture notes of the 49th IFF Spring School 2018 / Gerhard Gompper, Jan Dhont, Jens Elgeti, Christoph Fahlke, Dmitry Fedosov, Stephan Förster, Pavlik Lettinga, Andreas Offenhäuser (eds.) ; this Spring School was organized by the Institute of Complex Systems of the Forschungszentrum Jülich on 26 February until 9 March 2018. In collaboration with universities and research institutions.