The realisation that we are all basically the same human beings, who seek happiness and try to avoid suffering, is very helpful in developing a sense of brotherhood and sisterhood; a warm feeling of love and compassion for others.
 14th Dalai Lama, Nobel Lecture (1989). copy citation

Context

“They too are human beings who struggle to find happiness and deserve our compassion. I speak to inform you of the sad situation in my country today and of the aspirations of my people, because in our struggle for freedom, truth is the only weapon we possess.
The realisation that we are all basically the same human beings, who seek happiness and try to avoid suffering, is very helpful in developing a sense of brotherhood and sisterhood; a warm feeling of love and compassion for others. This, in turn, is essential if we are to survive in this ever shrinking world we live in. For if we each selfishly pursue only what we believe to be in our own interest, without caring about the needs of others, we not only may end up harming others but also ourselves.” source