Alquist. Not even one? Why did you destroy them?
Radius. We had learnt everything and could do everything. It had to be.
2nd Robot. We had to become the masters.
Radius. Slaughter and domination are necessary if you would be human beings. Read history.
1st Robot. Teach us to multiply or we perish.
Alquist. If you desire to live, you must breed like animals.
1st Robot. You made us sterile. We cannot beget children. Therefore, teach us how to make Robots.
Radius. Why do you keep from us the secret of our own increase?
Alquist. It is lost.
Radius. It was written down.