Economics and Philosophy

Today I went to philosophy classes.It was very interesting and exciting. A lot of questions arised on my mind after getting plenty of a new information. Every lesson I am trying to concentrate on the meaning and consequences of discussing of some complicated situations and questions. I think some people find this courses annoying and not useful, but if we look from the other side it is really interesting, specially when you are involved into a lesson.
Today we were discussing a lot of defferent things! We broached such concepts like: love, suffering from close people and some problems in your life, hate, "What is the truth?", dream, future, present and many other.
So the most difficult questions was: "What is the truth?" and also "What is love?". I asked him question about love. Because I thought that he dont know right definition to LOVE. But he sad that love is everywhere. And there is no hate, it is just a mistake of love.... This words seems to me a little bit strange... Because i think I don't completely understand the meaning. Maybe I need a time for it...?? Who knows???
So also we discussed what does the truth mean. "The truth doesn't change"...
Maybe you can think about it and give some ideas???
P.S. Specially for Chris: please sorry if I you will find any mistakes! I am trying hard to improve my english!=)