Speaker for the dead

I've just started to read this book that is the second book of the Ender's cicle.
The Others are still out there, but sometimes they're closest than we can imagine. Must we kill them all or learn to live in peace with them? Tolerance is not always the good solution, as tolerance don't really let understand what the Others really are. We tolerate their traditions, but must we accept and understand them? Obviously this is a too hard question for a simple post at 11 am.
I'll tell you once I've read it all.