nvrgnbk,
When it comes to that issue ( contra-causal free will or ultimate self-determination), I think it is a little bit of both. I think our potentialities are partly determined by our physical makeup and its formative environment, but that within that framework we will what we wish. I am nothing if I am not an anti-determinist . This puts me at loggerheads not just with Naturalists of the Spinozan bent but also with Calvinist Christians.
As for the social theory outlined in the quote, who gets to set the social policy that tries to "maximize the opportunities for each person's development, independent of differences inherited talent or social status."?
Arguing from the naturalist position, it would have to be humans, who the quote itself states are "entirely the product of genetic and environmental conditions"!
Internally self contradictory.