We're not just discussing limits on a further increase of nuclear weapons; we seek, instead, to reduce their number. We seek the total elimination one day of nuclear weapons from the face of the Earth.
There are no great limits to growth because there are no limits of human intelligence, imagination, and wonder.
I've often wondered, what if all of us in the world discovered that we were threatened by an outer -- a power from outer space, from another planet. Wouldn't we all of a sudden find that we didn't have any differences between us at all, we were all human beings, citizens of the world, and wouldn't we come together to fight that particular threat?