It may happen sometimes that a long debate becomes the cause of a longer friendship. Commonly, those who dispute with one another at last agree. Elbert Hubbard
A society is a group whose members have more relationships with one another then they do with outsiders. Carroll Quigley
The history of science is rich in the example of the fruitfulness of bringing two sets of techniques, two sets of ideas, developed in separate contexts for the pursuit of new truth, into touch with one another. Robert Oppenheimer
In accordance with the foregoing investigations on mathematical principles, let bronze vessels be made, proportionate to the size of the theatre, and let them be so fashioned that, when touched, they may produce with one another the notes of the fourth, the fifth, and so on up the double octave. Vitruvius
Words make love with one another. André Breton
In a capitalist society, all human relationships are voluntary. Men are free to cooperate or not, to deal with one another or not, as their own individual judgments, convictions and interests dictate. Ayn Rand