Some of us thought that New York Gov. Mario Cuomo's decision not to enter the presidential race would put an end to the burgeoning Cuomo mythology industry, and would mark a well-deserved respite from the governor's periodic pronouncements on the State of American Politics.

David Broder -- with a little help from the governor -- has proved us wrong again {"More From Mario the Mysterious," op-ed, Aug. 2}. Broder and Cuomo hold that "passionate intensity" is an essential ingredient in a winning Democratic presidential brew. The Democratic Party will be better served if the governor hawks his personal concoction closer to Albany; yes, perhaps there's even a market for it in Buffalo.

Cuomo maintains that while "the American people have had their fill of charisma" after six years of Ronald Reagan, and while the candlepower of the current crop of Democratic presidential candidates is unmistakable, "competence . . . will not be enough. Nor should it be." The nominee, says the governor, must demonstrate "intense and daring commitment."

Sure. And Joan Collins needs a date.

One of the last things post-Reagan America deserves is a president to whom the labels "daring" and "passionate" stick easily. Cuomo, by emphasizing the search for these qualities, undermines attempts by Democrats to offer thoughtful, intelligent leadership. The American people must come to understand that effective government and thoughtful national policy are primarily dull, like the management of a major corporation, rather than exciting and spontaneous, like the "McLaughlin Group."

What pressing national problems require the application of passionate intensity over dispassionate management? The trade deficit? AIDS? The search for peace in the Middle East? Will a passionate and intense portrayal of the dangers of continued nuclear testing produce a verifiable agreement with the Soviets? Will spirited (and competent) cheerleading erase the federal budget deficit?

Of course not. And besides, the very issues that typically have been associated with passionate intensity -- arms control, the environment, civil rights -- are now pushed by advocacy groups that employ cadres of smooth, highly paid lobbyists. Were Yeats here today he might remark that the best operate out of suites near Dupont Circle, while the worst are fully staffed and have a view of the Beltway.

America is emerging from its eight-year Reagan hibernation, and let us hope that the Democrats offer an alternative to further histrionics. A blase' ticket could be just the ticket. -- Jack S. Weiss