Leonardo da Vinci was one of the world’s most famous geniuses and a polymath.

Paul Klee: "Ghost of a Genius" (1922)

A genius is a person who is exceptionally intelligent. People may have different ideas of how clever one has to be in order to be called a “genius”. A genius may be extremely clever at maths or science or games such as chess, or they may be creative geniuses who are brilliant writers, musicians or artists.