The Rubicons which women must cross, the sex barriers which they must breach, are ultimately those that exist in their own minds.
A street thug and a paid killer are professionals - beasts of prey, if you will, who have dissociated themselves from the rest of humanity and can now see human beings in the same way that trout fishermen see trout.
You have to keep your sanity as well as know how to distance yourself from it while still holding onto the reins tightly. That is a very difficult thing to do, but I'm learning.

