By Colons, Expressions

http://grammar.ccc.commnet.edu/grammar/runons.htm Run-on sentences happen typically under the following circumstances*: When an independent clause gives an order or directive based on what was said in the prior independent clause: This next chapter has a lot of difficult information in it,...

I like the dash. It lets one add emphasis and (dramatic) pauses.I think the summary in Webster's Third New International Dictionary is excellent:7. THE DASH7.0 In its function in writing and in the speech intonation to which it corresponds, the dash is similar to the comma and the colon, and a...

So... I might use "as regards". Or perhaps with this expression I would have the same problem. If this is the case, I could just leave the paragraph as it was... In any case, I could still replace "it" by your suggestion "such skepticism". Sextus

Davkett wrote: Would you consider this?-- As to the kind of modern moral skepticism which denies the existence of objective moral values, Julia Annas has affirmed that it is essentially ‘local’, a term which suggests that such skepticism rests on a contrast between morality and some other view...

I think this sentence is perfectly fine. If you are concerned about the items following the colon being fragments, this is a standard usage of the colon. Lack of writing etc form an explanation, definition, or listing of the three areas. The colon can be thought of as being in the place of...

Yup. The clause from "you can help..." to "...with" is a little long and easy to get lost in, and it's mildly inconsistent to join this to preceding clause with a semicolon, but to the following clause with a period. There should also be no hyphen between "nonactions" and "have". I would change...