They had a population of about three million--not a large one, but quality is something.

Three million is quite enough to allow for considerable variation, and these people varied more widely than we could at first account for.
Terry had insisted that if they were parthenogenetic they'd be as alike as so many ants or aphids; he urged their visible differences as proof that there must be men--somewhere.
But when we asked them, in our later, more intimate conversations, how they accounted for so much divergence without cross-fertilization, they attributed it partly to the careful education, which followed each slight tendency to differ, and partly to the law of mutation.

This they had found in their work with plants, and fully proven in their own case.
Physically they were more alike than we, as they lacked all morbid or excessive types.

They were tall, strong, healthy, and beautiful as a race, but differed individually in a wide range of feature, coloring, and expression.
"But surely the most important growth is in mind--and in the things we make," urged Somel.

"Do you find your physical variation accompanied by a proportionate variation in ideas, feelings, and products?
Or, among people who look more alike, do you find their internal life and their work as similar ?" We were rather doubtful on this point, and inclined to hold that there was more chance of improvement in greater physical variation.
"It certainly should be," Zava admitted.