The artist strove to convey the inner world of the model, her intelligence and psychological depth. Lisa’s look is direct, but at the same time it seems that she is thinking about something important.
The theme of the painting can be viewed in the context of Renaissance humanism: a focus on the individuality of the model, her humanity, and her inner world.
The enigmatic smile of Mona Lisa is one of the most famous mysteries of the painting. The first version of the expression was announced by da Vinci's contemporary, Giorgio Vasari, who wrote that the artist invited musicians to entertain Lisa, and her face never left a smile.