The tribe is whatever we believe it is. If we say the tribe is all the Little Ones in the forest, and all the trees, then that is what the tribe is. Even though some of the oldest trees here came from warriors of two different tribes, fallen in battle. We become one tribe because we say we're one tribe." Ender marveled at his mind, this small raman [member of another sentient species]. How few humans were able to grasp this idea, or let it extend beyond the narrow confines of their tribe, their family, their nation.
Orson Scott CardCome into our home, daughters of Earth; dwell in our tunnels, harvest our fields; what we cannot do, you are now our hands to do for us. Blossom, trees; ripen, fields; be warm for them, suns; be fertile for them, planets: they are our adopted daughters, and they have come home.
Orson Scott Card