Altruistic Acts

Hey Guys,
I was just reading a book that gives some examples of altruistic acts. These are as follows:
-Angela Salowa of Krakow who tended to WW1 soldiers of all nationalities
-Oskar Schindler (Germany) who saved the lives of 1200 jews in WWII
-Katherine Drexel of Philidelphia who founded dozens of mission centre and schools for Native Americans
-many individuals fleeing to New York folowing the 9/11 attacks
-organ donations
-people giving their support and donations in the case of natural disasters (Hurricane Katrina, Asian Tsunami)
-children giving their toys to less fortunate people
-Elizabeth of Hungary, who as a privileged teenager began a life of prayer, sacrifice and service to the poor and sick.
These are just a few examples of altruistic acts in society, but are these genuine. Did Oskar Schindler save the lives of all these jews just so that he could be looked up to for many years after? We'll find out more soon.

Peterson, C. & Seligman, M. E. P. (2004). Character strengths and virtues: A handbook and classification. NY, Oxford.