Page "The Mote in God's Eye" Paragraph 27

Because the Moties learned about the Langston Field, enabling them to establish colonies independently, it seems the only option is to send the Fleet to eradicate the entire Motie species.

However, the Mediator Charlie, who represents the minority view from Mote Prime, persuades the Commission to establish a permanent blockade of the system's only worthwhile exit through the Alderson point, allowing the Moties to survive with the seemingly endless Cycles, until such time as the humans can find a cure for their birth rate, something " sane " Moties think impossible.