Quote (Lifesong @ 15 May 2015 09:28)
No philosophy titles have been mentioned yet! I've been trying to get into graduate school for two years to study philosophy.
I would say Augustine's Confession has been really formative for me and got me thinking a lot more about faith and religious philosophy. (Augustine was a Christian thinker, so the book is heavy in this area.)
I have enjoyed the philosophy of the Stoics as well. If you want to be challenged to live better, try Epictetus' Handbook and Discourses.
So many to name, so little space!
+1 for Epictetus and Stoics in general.
For me the #1 is Meditations by Marcus Aurelius. It's a strengthening book to say the least. Obviously I cannot agree with all he has to say, but even if you don't agree with him at all, you can consider it an interesting journey to the mind of an emperor struggling to find some constants in his thoughts, something to guide him when all is going wrong in every frontier (sometimes literally).