Genetic Progress by Voluntarily Conducted Germinal Choice 
benefited, will be able to choose better than they did. The 
broadness of the base constituted by the population of 
choosers themselves will ensure that they also perpetuate a multi- 
tude of special faculties of mind and body, which they severally 
regard especially highly. This will promote a salutary diversity. 
Undoubtedly further techniques are in the offing that will 
radically extend the possibilities of germinal choice. Among 
these are, perhaps, the storage of eggs. Still more important is 
the working out of methods for obtaining normal development 
of germ cells outside the body, using immature germ cells a 
supply of which can be stored in deep-freeze, to be tapped and 
multiplied at will. Clonal reproduction, as by the transfer 
of unreduced nuclei to eggs, would be another milestone!!. 
Beyond all that are of course more delicate methods of manipu- 
lating the genetic material itself—what I have termed the use of 
nano-needles. Yet long before that we must do what we can. 
One could begin by laying up plentiful stores of germ cells for 
the future. Their mere existence will finally result in an irresis- 
tible incentive to use them. Man is already so marvellous that 
he deserves all our efforts to improve him further. 
SUMMARY 
Modern civilization has instituted a negative feedback from 
cultural progress to genetic progress. This works by preventing 
the genetic isolation of small groups, by saving increasing 
numbers of the genetically defective, and by leading the better 
endowed to engage more sedulously than others in reproductive 
restraint. Yet the increasing complications, dangers, and oppor- 
tunities of civilization call for democratic control, based on 
higher, more widespread intelligence and co-operative propen- 
sities. 
The social devices and the individual persuasion regarding 
family size advocated by old-style eugenics are inadequate to 
meet this situation, except in extreme cases of specific defects. 
For the major problem, concerned with quantitative characters, 
the more effective method and that ultimately more acceptable 
psychologically is germinal choice (Brewer’s  eutelegenesis). 
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