Optimum bluffing strategy to the point where he is afraid to bluff you at all. On the other hand, you want to push an aggressive player who may be bluffing slightly more than optimally into bluffing even more. In other words, against an opponent who seems to bluff a little more than is correct, induce a bluff and make that player bluff more. Against an opponent who tends to bluff less than is correct, stop him and make him bluff even less. In either case, you are stopping bluffs or inducing bluffs to make your opponents bluff incorrectly.
Good bluffing strategy is such a powerful weapon that it is important to develop tactics to keep your opponents from bluffing correctly. Naturally you are not concerned about changing the habits of opponents who almost never bluff or bluff far too much. But when you find yourself up against a player whose occasional bluffing keeps you on the defensive, you want to try to lead that opponent away from correct bluffing strategy.
You want to induce him to bluff more than he should or stop him from bluffing as often as he should. Whether you try to induce a bluff or to stop a bluff depends upon your opponent. If you are playing against a relatively tight player who nevertheless seems to be winning too many hands without getting called, suggesting he may be stealing some pots, you want to stop him from bluffing.