Friends are true Twins in Soul; they Sympathize in every thing, and have the Love and Aversion. One is not happy without the other, nor can either of them be miserable alone. As if they could change Bodies, they take their turns in Pain as well as in Pleasure; relieving one another in their most adverse Conditions. What one enjoys, the other cannot Want. Like the Primitive Christians, they have all things in common, and no Property but in one another.

109 - 110 - Fruits of Solitude (1693)