Wednesday's Lecture & Altruism

Hey guys hows the weekend going? I remember a point that James talked about in Wednesday's lecture regarding whether or not genuine altruism exists. James used the example of an individual risking his/her own life to save another as a true act of altruism. This is no doubt an act of altruism but it is always impossible to draw the line to decide if the altruistic act was performed out of self interest (e.g. getting an award and public recognition) more than the interest of the other person. Does? genuine altruism really exist? The more I ask this question the more I sway to the idea that it doesn't exist. Anyway, just a few thoughts.