What were the greatest lessons you learned in college?

There was an interesting piece in today's New York Times called Don't Worry, Be Students where they interviewed the young alumni of various institutions (Penn was one of them) instead of current students (like they do for U.S. News and World Report). I thought this offered a new insight since alumni had a few years to reflect back to their college experiences and weren't in the midst of it. Its also interesting what people remember. Say you got an "A" in Physics, but 5 years later you don't remember how to calculate centripetal force, does that mean you really learned something if you don't retain it?

What I thought was interesting is when recent graduates were asked what they valued most in their undergraduate experiences, that most Penn students gave "Education, skills, training and research skills" the same value as "Friends." Only 5% of Penn students valued "Intellectual Stimulation, Learning and how to think" compared to 28% of Reed students. I didn't know much about Reed until I read this article, but they are a selective, small liberal arts college in Portland, Oregon.

I've been out of my undergraduate years at Temple for more than 5 years now and wonder if I could even list all the courses I took. But I would say my most valuable learning experiences were through working at the college newspaper, becoming close friends with people who have very different backgrounds than me, and taking this course called Intellectual Heritage, where we read Karl Marx, Gandhi, the Bible, the Koran, and Machiavelli to name a few. I'll talk more about this later after class. Check out the New York Times article in the meantime.