An egoist is someone who only thinks about themselves and acts in their own self-interest. They prioritize their own desires and needs above others. Full definition
Harvard biologist Edward O. Wilson, for example, argues that evolutionary forces imply the triumph of selfish people over altruists within groups, but that groups of altruists beat groups of egoists. (imf.org)
I'm sure you've red the article on the Lamborghini Aventador Egoist Concept published a few days ago, showing an innovative aerodynamic styling kit that would make a regular Aventador look more like the one of a kind Egoista that was unveiled at the 50th Anniversary Gala Dinner back in May 2013. (lambocars.com)
Otherwise we shall, from the Christian point of view, remain obstinate egoists who fundamentally fight for themselves rather than for their object. (religion-online.org)