Brown made his comments Sunday during an appearance on NBC's Meet the Press. He was asked whether legalizing marijuana was a good or bad idea for California.
Brown said the state already has medical marijuana which gets very close to what Colorado and Washington have.
"I'd really like those two states to show us how it's going to work. The problem with anything, a certain amount is okay but there is a tendency to go to extremes. And all of a sudden if there's advertising and legitimacy, how many people can get stoned and still have a great state or a great nation. The world's a pretty dangerous, very competitive. I think we need to stay alert."
In a wide-ranging interview Brown also discussed California's drought problems, climate change and his future political career.
California lawmakers are looking for ways to address some of the challenges faced by male minorities in the state.
Pro-choice lawmakers are backing a bill in the California Assembly that seeks to ensure pregnant women know they have access to abortions.
The California Medical Association has changed its position on a physician aid in dying bill currently in the state Senate.
Governor Jerry Brown is encouraging regional governments around the world to follow California’s lead on climate change. On Tuesday, he and international leaders signed an agreement to reduce carbon emissions.
Not everyone is happy with the revised budget proposed by California Governor Jerry Brown. But he does have the approval of the Community College system. Brown attended the Community College Board of Governors meeting today.