Check out some of his writings, right here. An excerpt from one of the papers on the muralists and communism can be found here. In the Alamo, as the Texas independence fighters were surrounded by the Mexican General Santa Anna's troops, outnumbered by 25 to one, Colonel William Travis drew a line in the sand and asked that only those people who were prepared to die in a battle for liberty cross the line. The rest died in the ensuing battle but managed to do enough damage that Santa Anna's troops went on to eventually lose the war, and several years later Mexico lost half of its territory. This is the story as taught to millions of school children.
Children ask the obvious questions.
Why can you buy stuff with real money but not with play money.