and ye harm none....

and ye harm none, do as thou will

I don't get all wrapped up in this.  Lots and lots of discussions about what this means.  I think you either have a moral compass or you don't and either way this is a simplistic, albeit confusing, directive.

I think Crowley proposed a more challenging way to think about this:
Do as thou wilt shall be the whole of the law.  Love is the law, love under will.

And St. Augustine of Hippo phrased it slightly differently:
Love and do what thou wilt.