Many politicians in the West cling to the notion of a partnership with Russia. They want to include [Vladimir] Putin, make compromises and constantly negotiate new deals with him. But history has taught us that the longer we pursue appeasement and do nothing, the higher the price will be later on. Dictators don't ask "Why?" before they seize even more power. They ask: "Why not?"

His teaching became a turning point in chess history: it was from Steinitz that the era of modern chess began. The contribution of the first world champion to its development is comparable with the great scientific discoveries of the 19th century.

One does not succeed by sticking to convention. When your opponent can easily anticipate every move you make, your strategy deteriorates and becomes commoditized.

Many people think they are too refined, or too rational, to entertain a real sense of wonder in themselves or in others. This is preposterous to me, since the natural world is full of endless wonders, both on Earth and especially in space, no matter how you think it was created.

Values-oriented foreign policy of the free world would be much better, supported by the self-awareness of being on the right side of history.

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 see threats to liberal democracy coming from lots of directions. We have to create something new, a common response, because in so many places - the UK, France, Germany - ultranationalists and the far left threaten the free market and liberal democracy.