'We
 habitually erect a barrier called blame that keeps us from 
communicating genuinely with others, and we fortify it with our concepts
 of who's right and who's wrong. We do that with the people who are 
closest to us and we do it with political systems, with all kinds of 
things that we don't like about our associates or our society. It is a 
very common, ancient, well-perfected device for trying to feel better. 
Blame others. Blaming is a way to protect your heart, trying to protect 
what is soft and open and tender in yourself. Rather than own that pain,
 we scramble to find some comfortable ground.'
Pema Chodron
Source: In The Gap Between Right and Wrong