The rationale for loving others is the recognition of the simple fact that every living being has the same right to and the same desire for happiness, and not suffering, and the consideration that you as one individual are one life unit as compared with the mulititude of others in their ceaseless quest for happiness.
Dalai LamaSelf satisfaction alone cannot determine if a desire or action is positive or negative. The demarcation between a positive and a negative desire or action is not whether it gives you a immediate feeling of satisfaction, but whether it ultimately results in positive or negative consequences.
Dalai LamaWe know that to wage a nuclear war today, for example, would be a form of suicide; or that to pollute the air or the oceans in order to achieve some short-term benefit would be to destroy the very basis for our survival.
Dalai LamaScientists may study mainly matter but they cannot ignore the human mind, or consciousness: spiritual practitioners may be engaging mainly in developing the mind but they cannot completely ignore their physical needs. It is for this reason that I have always stressed the importance of combining both mental and the material approach to achieving happiness for humankind.
Dalai Lama