Know your enemy; know his ways. Find his strengths and what makes them weak. Understand his purpose and know his will. What are the means at his disposal to carry out his mission? What is the history behind his motives: motives, the fuel that drives him onward, obsesses him, skews his reason and warps his logic?
Know your enemy better than he knows himself – know yourself even better. But if in his bed you seek this understanding you will forget your purpose, you will not remember who you are and through fond intimacy become his ally. Ignorantly and blissfully you will do his bidding and inevitably fall, his victim.
You need not intimately acquaint yourself with what you fight against, to affectively fight against it.