Well , the answer is not always the same . It depends on the stack I have ,the blinds level , if it's the final table.
On a big stack , I prefer folding many times and waiting for the good hand that will make him lose eventually a big part of his chips . If he thinks that raising , reraising , 3 being, 4 beting all the time will make me fold because I'm a weaker player than him , he's going to pay this misjudgement , and this has happened some times .
But the problem is if my stack is low , then I start playing a wider range of cards as wide as the aggressiveness of my opponent is when my remain blinds is very low .So I'm ready to shove preflop if he doesn't fall back with not only high pairs or big Ax but with more cards as long as my situation gets worse and worse.I've seen many react to these LAG players immediately , even if they have big stacks , ythey fight fire with fire like someone above said ,this is a tactic I don't follow as I am not yet capable enough to outplay them , but hope in the future to be , cause these overaggressive LAG are really pain in the ass , sometimes they remind me of donkeys .
On a final table , well , it depends mainly on what position I have , the position of the others , the payments and on my stack.