Lack of understanding of the true nature of happiness, it seems to me, is the principal reason why people inflict sufferings on others. They think either that the other's pain may somehow be a cause of happiness for themselves or that their own happiness is more important, regardless of what pain it may cause. But this is shortsighted. No one truly benefits from causing harm to another sentient being. . . . . In the long run causing others misery and infringing their rights to peace and happiness result in anxiety, fear, and suspicion within oneself.
Dalai LamaEach of us must learn to work not just for one self, one's own family or one's nation, but for the benefit of all humankind. Universal responsibility is the key to human survival. It is the best foundation for world peace.
Dalai Lama