Throughout my chess career I sought out new challenges, looking for things no one had done before.

Sometimes the hardest thing to do in a pressure situation is to allow the tension to persist. The temptation is to make a decision, any decision, even if it is an inferior choice.

Nervous energy is the ammunition we take into any mental battle. If you don't have enough of it, your concentration will fade. If you have a surplus, the results will explode.

When you put party over principles, you can't avoid tripping over your own hypocrisy and contradictions eventually. The GOP establishment refused to stand up to Trump during the primary because they wanted his voters in order to beat Hillary Clinton. Then he won the primary, and then the general, and the GOP both times decided it was better to cling to their grasp at power, to cling to Trump and all he stands for, a decision that should destroy the party or drag it down for a generation.

Excelling at chess has long been considered a symbol of more general intelligence. That is an incorrect assumption in my view, as pleasant as it might be.

It is quite difficult to establish a clear-cut cause-and-effect relationship, as the causes are manifold and closely connected. It is simply not correct to link the level of democracy to prosperity. It is absolutely clear that the economic wealth of Saudi Arabia exceeds the performance of the Czech Republic. But apparently democracy is quite stable in the Czech Republic, which cannot be said about Saudi Arabia. As we delve into the past, we must not forget about the existing model of society.

Revenge for a terror attack is ideal for Putin's model. His propaganda machine will be filled with scenes of crash victims if [Vladimir] Putin sees the need for a larger war to stoke his domestic support again as the Russian economy teeters.