Two years ago, most investors felt like optimists and proclaimed that we lived in the best of all possible worlds. At the time, I (a pessimist) feared that that was true! By contrast, in 2008, after it has gotten as dark as it has, one can finally (as a result of policy decisions and signs of a thawing in credit) begin to see the stars. Accordingly, investors (not traders!) eyeing the intermediate-term outlook should now begin to feel like an oversexed man in a harem, as this is the time to start buying stocks. And, in case you were wondering, this is not another April Fool's Day joke; it is honest October optimism. Doug Kass writes daily for RealMoney Silver , a premium bundle service from TheStreet.com. For a free trial to RealMoney Silver and exclusive access to Mr. Kass' daily trading diary, please click here.