When you see a good move, look for a better one.
The Pin is mightier than the sword.
The chessboard is the world, the pieces are the phenomena of the Universe, the rules of the game are what we call the laws of Nature and the player on the other side is hidden from us.
Strategy requires thought, tactics require observation.
Dr. Euwe was a former world champion from Holland. Huxley was a scientist who supported evolution. Dr. Lasker was a world champion. Lasker's words are also good for backgammon, checkers, pente, and a variety of other games. Reinfeld was a prolific chess writer.
These images are presented courtesy of Public Domain Clipart.