The Greeks according to official history used letters for hundreds, for tens, and ones.It was extremely complicated. If you talk about Archimedes, you should use Greek letters.

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

Chess strength in general and chess strength in a specific match are by no means one and the same thing.

Putin recognized that if he could get enough money, everything would be under control.

We are living in a new ice age, and we need to apply the recipes of the Cold War to the Kremlin. That means isolation instead of offers of negotiation. And Ukraine should have been supplied with weapons long ago.

If critics and competitors can't match your results, they will often denigrate the way you achieve them. Fast, intuitive types are called lazy. Dedicated burners of the midnight oil are called obsessed. And while it's obviously not a bad idea to hear and consider the opinions of others, you should be suspicious when these criticisms emerge right on the heels of success.

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.