I wanted to continue to be active on those things that I cared about when I was president where I could still have an impact.

One of the things that I realized when I left office was that in the 1990's citizens across the world applied more power than they had ever had, as compared with the government, because of more people living under democracies than dictatorships for the first time, the power of the internet, which the young Chinese used to basically change China's policy on the SARS epidemic, and shut it down, and because of the rise in non-governmental organizations like my foundation.

Only the police should have handguns.

If you come from a wealthy country with open borders, unless you seriously believe you can kill, imprison or occupy all your enemies, you have to make a world with more friends and fewer enemies - with more partners and fewer terrorists.

Marijuana is ten times more dangerous than twenty years ago.

The first thing I had to start with was, you know, we don't have a war. We don't have a depression, we don't have a Cold War.

When we got organized as a country and we wrote a fairly radical Constitution with a radical Bill of Rights, giving a radical amount of individual freedom to Americans, it was assumed that the Americans who had that freedom would use it responsibly.