Animals can have more altruistic behavior than humans.
He seemed driven by purely altruistic reasons to organize a week-long celebration of Finnish design.
Both of these are original and indispensable, but egoism has the priority, since there must be egoistic pleasure somewhere before there can be altruistic sympathy with it.
Not all the reasons for joining a youth service group are entirely altruistic!
How do we know it is not our own selfish desires disguised by the unconscious into seemingly altruistic motives?