We must be optimistic about the future because it's a self-fulfilling prophecy. If we are creative and ambitious, intelligent machines will liberate us and be as profound a boon to our prosperity as electricity. If we are fearful, and fail to press ahead, we could be overwhelmed by automation and inequality.

We have to stop the propaganda, the shameful propaganda used by Kremlin to rehabilitate these old types.

[Vladimir] Putin is more of a poker player. In poker, unlike chess, you can effectively compensate for a very weak hand by bluffing. There are fixed rules in chess, and no one knows how the game will end. Things are currently the other way around in Putin's realm. But it won't stay that way forever.

There is no doubt that [Vladimir] Putin is responsible for this crime, whether or not he gave the order to commit the murder [of Boris Nemtsov] himself. Putin created the conditions and atmosphere that have made this kind of thing possible.

I have some security that could protect me against provocations but of course there are more terrible actions that could not be stopped by any security.

I would say, you have a unique chance of learning more about the game of chess with your computer than Bobby Fischer, or even myself, could manage throughout our entire lives. What is very important is that you will use this power productively and you will not be hijacked by the computer screen. Always keep your personality intact.

Do as little as necessary to appear to be doing something without actually committing to a cause or course of action.