It is not enough to limit your love to your own nation, to your own group. You must respond with love even to those outside of it. . . . This concept enables people to live together not as nations, but as the human race.
It is not from the benevolence of the butcher, the brewer, or the baker, that we expect our dinner, but from their regard to their own self-interest. We address ourselves, not to their humanity but to their self-love, and never talk to them of our own neccessities but of their advantages.
It is one of the severest tests of friendship to tell your friend his faults. So to love a man that you cannot bear to see a stain upon him, and to speak painful truth through loving words, that is friendship.
It is probably not love that makes the world go around, but rather those mutually supportive alliances through which partners recognize their dependence on each other for the achievement of shared and private goals.
It is wrong to think that love comes from long companionship and persevering courtship. Love is the offspring of spiritual affinity and unless that affinity is created in a moment, it will not be created for years or even generations.