Love thy neighbor

How does the following quotation apply to A Separate Peace and to the world around us? Use textual evidence to support your answer.




The remarkable thing is that we really love our neighbor as ourselves:
We do unto others as we do unto ourselves. We hate others when we
hate ourselves. We are tolerant toward others when we tolerate our-
selves. We forgive others when we forgive ourselves. It is not love
of self but hatred of self which is at the root of the troubles that afflict
our world.
--Eric Hoffer