Tolle Lege!.

I get irritated by people who think philosophy is a waste of time. A course like this one shows how profitable it is to learn critical reasoning and why it is so important for understanding our place in the universe. Most of the tough questions asked in the series don't have a cookie cutter answer, but all of them provided a method for approaching the question more profitably.

For example, on the nature of identity, what does it mean to be the same person over time ("ship of Theseus" question), he will show that it's probably more profitable to realize that the categories and labels that we put on the concepts about self identity are convenient fictions, and there just might not be a way to answer the question properly. He'll say perhaps as in the Dr. Who TV show that an episode from season one is different from an episode from last season, but they are connected because they are part of the same series. We aren't episodes, but are the series of events that make us up.

I loved the beginning lectures on the nature of knowledge and how absolute knowledge is best thought of as justified true believe. That series of lectures on knowledge and science (and there were several) helps put "philosophy of science" in perspective for me.

One note, I had listened to his course on Metaphysics. Get this one instead, because most of the lectures from that course seemed to also be on this one, and you get a lot more lectures in this course including most of the ones on the other one thus giving you better value for your money.

[I'll give a warning, if you're certain in your belief systems and have no doubt in your faith based things, this lecture might be a disconnect for you because he'll pretty much state that the soul makes no sense, God might not exist, free will is not what you think it is, and so on. As for me, I love learning things that challenge my world view and can recommend this lecture series for anyone who feels the same].
Trumpus delenda est.