Let's take it one step at a time.
One of my interpretive claims is that the following claims by Marx about reality:
“Reason has always existed, but not always in a reasonable form. The critic can therefore start out from any form of theoretical and practical consciousness and from the forms peculiar to existing reality develop the true reality as its obligation and its final goal." http://www.marxists.org/archive/marx/works/1843/letters/43_09.htm
are appropriating both the following claims about it by Hegel in terms of "the higher dialectic of the conception" and the claim about "the business of science" he bases on them.
"the higher dialectic of the conception does not merely apprehend any phase as a limit and opposite, but produces out of this negative a positive content and result. Only by such a course is there development and inherent progress. Hence this dialectic is not the external agency of subjective thinking, but the private soul of the content, which unfolds its branches and fruit organically. Thought regards this development of the idea and of the peculiar activity of the reason of the idea as only subjective, but is on its side unable to make any addition. To consider anything rationally is not to bring reason to it from the outside, and work it up in this way, but to count it as itself reasonable. Here it is spirit in its freedom, the summit of self-conscious reason, which gives itself actuality, and produces itself as the existing world. The business of science is simply to bring the specific work of the reason, which is in the thing, to consciousness." http://www.marxists.org/reference/archive/hegel/works/pr/printrod.htm
That is, this
"The critic can therefore start out from any form of theoretical and practical consciousness and from the forms peculiar to existing reality develop the true reality as its obligation and its final goal."
appropriates this
"the higher dialectic of the conception does not merely apprehend any phase as a limit and opposite, but produces out of this negative a positive content and result. Only by such a course is there development and inherent progress. Hence this dialectic is not the external agency of subjective thinking, but the private soul of the content, which unfolds its branches and fruit organically.”
and this
“Reason has always existed, but not always in a reasonable form."
appropriates this
"To consider anything rationally is not to bring reason to it from the outside, and work it up in this way, but to count it as itself reasonable."
Finally, Marx's idea of "true reality" as the "obligation" and "final goal" of "any form of theoretical and practical consciousness" appropriates Hegel's idea that "it is spirit in its freedom, the summit of self-conscious reason, which gives itself actuality, and produces itself as the existing world."
Ted