Which Latin expression is the motto for the modern Olympic Games?

The Olympic motto is "Citius, Altius, Fortius." These three Latin words mean "Swifter, Higher, Stronger." Baron de Coubertin borrowed the motto from Father Henri Martin Dideon, the headmaster of Arcueil College in Paris. Father Dideon used the motto to describe the great achievements of the athletes at his school. Coubertin felt it could be used to describe the goals of great athletes all over the World.

The most important thing in the Olympic Games is not to win but to take part, just as the most important thing in life is not the triumph but the struggle. The essential thing is not to have conquered but to have fought well.