There could be an independent labor-based party, which might over time become an important force the way the Labor Party did in England. To all of these things there are plenty of barriers, in the culture and in the social and political institutions, the concentration of economic power. But these are not insuperable barriers, I think. They can be overcome. And it is urgent that this be done, because there are really incredible problems that are simply not being addressed.

There are plenty of things that are unknown, but are assumed reasonably to exist, even in the most basic sciences. Maybe 90 percent of the mass-energy in the universe is called "dark," because nobody knows what it is.

Bolivia is in the lead internationally in talking about the threat of environmental catastrophe. It's generally true where there are indigenous populations, there are important things happening; where the indigenous populations have been marginalized or exterminated, things go to a disaster. This is true worldwide, and Bolivia is striking because it's a majority population and in the lead.

Throughout history, even the harshest and most shameful measures are regularly accompanied by professions of noble intent - and rhetoric about bestowing freedom and independence.

Democracy was regarded as entering into a crisis in the 1960s. The crisis was that large segments of the population were becoming organized and active and trying to participate in the political arena.

If you assume that there is no hope, you guarantee that there will be no hope. If you assume that there is an instinct for freedom, that there are opportunities to change things, then there is a possibility that you can contribute to making a better world.

The [Barack] Obama administration has pressured Mexico to keep them away from the Mexican border, so that they don't succeed in reaching the United States. Pretty much the same thing Europeans have done to Turks and Syrians.