Hmmm...
With "When I Look At The World", I see this as a song where a person is reluctant to voice their opinions on all the issues of this world, even though someone is curious to hear their views, they're not sure they want to share them.
So the lines, "When the night is someone else's and you're trying to get some sleep" part...I see that as everyone else being opinionated on an issue, but the person who's reluctant to share their views wants to just forget about these topics of discussion, they want everyone to just drop the subject at hand and move on and let them be. Everyone else is making noise about something, and there's that one person who wants everyone to be quiet.
As for the "When your thoughts are too expensive to ever want to keep"-to me that sounds like he's saying that the person in that song's thoughts are too important to keep quiet...he's asking that person what they see in this world, what their opinions are of whatever's going on in this world, so he feels their thoughts are too important to not be expressed. They may be reluctant to share them, but they could give a whole new perspective on what's going on, or they could open up a solution to whatever problem's going on, so they should be shared.
Since ATYCLB took on a whole new meaning after 9/11, this interpretation could work with that event. Practically everyone was quick to voice their opinions on what should be done and who should be punished and whether or not war was necessary and everything, but some people just wanted to forget about it, forgive, grieve, and move on with their lives.
However, those quiet ones who wanted to do that may have the best solutions to the problem at hand, since they were the most peaceful of everyone, the most willing, possibly, to forgive, so to hear their views would've been a good thing.
As for "Summer Rain", I agree with Bonochick. That song's basically saying to stop and smell the roses once in a while, to stay strong and stick to your beliefs and your way of life, to enjoy what life has to offer you.
Angela