Richard Lee, shown at his marijuana-growing vocational school in Oakland, has spent $1.3 million on the recreational pot initiative.For much of his life, Richard Lee needed neither liberation nor a cause. The Oakland medical pot entrepreneur, who spent $1.3 million to qualify this November's initiative to make recreational pot use legal in California, once lived for thundering his Harley-Davidson motorcycle down Texas highways. His father, Bob Lee, said his son used to ride to a Houston airport, climb into an ultralight airplane and soar above the rice fields, "playing tag with the seagulls." Lee's close friend Kurt Calivoda, with whom he worked in a Houston stage lighting business, remembers a wiry, athletic man "who could climb on anything." No more. Lee, 47, was paralyzed in a fall 20 years ago.