Coming into this a little late, I have scanned through the replies on this and I apologize if this was brought up and I completely missed it somehow. Also not trying to beat a dead horse here.
As mentioned, RAH was a firm believer in personal responsibility, accepting consequences, etc. With that in mind...
RAH's statement in the quote about rape is taken completely wrong. He didn't mean it in a 'she was asking for it' type of way at all. Bringing his personal philosophy into the context of it (which you do have to do if you're going to attribute that statement as part of his personal belief) the statement means that if a woman is truly afraid of rape, or doesn't want to be raped, she will have learned how to fight off/stop a would be rapist. It is partly her fault because she has never taken the time to learn self defense, not because of the way she is dressed or acting.
Another way of presenting the same idea:
If you don't know how to defend yourself and walk around flashing wads of cash, it's partially your fault if you get mugged.
RAH chooses to go to the extreme position to present the same idea, this is something he does a lot and it's always shocking on the face of it, until you examine it.
Whatever you do, don't read Farnham's Freehold. LOL!