Peace, in the sense of the absence of war, is of little value to someone who is dying of hunger or cold. It will not remove the pain of torture inflicted on a prisoner of conscience. It does not comfort those who have lost their loved ones in floods caused by senseless deforestation in a neighbouring country. Peace can only last where human rights are respected, where the people are fed, and where individuals and nations are free. True peace with oneself and with the world around us can only be achieved through the development of mental peace. The other phenomena mentioned above are similarly interrelated. Thus, for example, we see that a clean environment, wealth or democracy mean little in the face of war, especially nuclear war, and that material development is not sufficient to ensure human happiness.
Tenzin Gyatso, The 14th Dalai Lama