I believe all suffering is caused by ignorance. People inflict pain on others in the selfish pursuit of their happiness or satisfaction. Yet true happiness comes from a sense of inner peace and contentment, which in turn must be achieved through the cultivation of altruism, of love and compassion and elimination of ignorance, selfishness and greed.
Dalai LamaUntil you have the inner discipline that brings calmness of mind, external facilities and conditions will never bring the joy and happiness you seek. On the other hand, if you possess this inner quality, calmness of mind, a degree of stability within, even if you lack the various external factors that you would normally require to be happy, it will still be possible to live a happy and joyful life.
Dalai LamaHuman beings are of such nature that they should have not only material facilities but spiritual sustenance as well. Without spiritual sustenance, it is difficult to get and maintain peace of mind.
Dalai Lama