Back when I was forced to take philosophy classes, I studied a text by Hobbes, in which it was argued that friendship was a very egotistical affair. I can't remember everything about it, I only remember it was about that and it made Tweety mad with anger.
Then I grew up, forgot all about it - or so I thought.
Because I just stumbled upon a document that mentions quot;Hobbesian assumptions", and dear GOD, I know what it means!!!
But don't worry, I will never be thankful for philosophy classes.