Today, we bring you another focus challenge, in which we invite you to spend uninterrupted time looking at a piece of art.

PARIS — Brigitte Bardot lounged barefoot on a Saint-Tropez beach, drawing languorous puffs from her cigarette. Another actor, Jean-Paul Belmondo , swaggered down the Champs-Élysées with smoke curling ...

The politician Theodore Roosevelt, Montana-based western artist Charles M. Russell and novelist Jack London of “The Call of ...