But after all why should the fact that we do not understand the expression of this face trouble us, or that nearly every time we look at it we find a new expression, a different meaning? Is not the same thing true at times even with our most intimate friends? We think we know just what they will do and say, yet are we not often amazed at some sudden change in opinion or action on their part? It but marks their individuality, and we accept it as part of them. And that is one of the reasons this portrait of Mona Lisa is considered the greatest ever painted, because it represents so well the mystery of human personality. If so great an artist as Leonardo da Vinci spent four years painting this picture, and it is still considered by the great art critics the most wonderful portrait ever painted, we must study it even more carefully if we have not liked it at first.

Leonardo da Vinci had musicians playing or jesters with their funny sayings to amuse Mona Lisa while he was painting her picture. He did not wish her to think of herself or to grow weary and look tired.

As you look at the picture can you not imagine you hear the music of stringed instruments and the splash of that rushing, roaring little stream in the background? Mona Lisa is listening, dreaming, thinking. She looks at us, then on beyond without seeing us. She seems to know everything, feel everything, yet her smile is reassuring.

Her hands are beautiful. In that all will agree. The few details of her dress and scarf are exquisite, even in a print.

We cannot be quite sure about the chair she sits in; some say it is of marble, others that it is a wooden chair. And where is she seated? Some say it is on the roof of a building, others say on a balcony, but that is even less mysterious than that strange, winding, dashing, little mountain stream that comes and goes we know not whither.

Critics cannot even decide what time of day it is in the picture, the light is so uncertain; some claim it is twilight; others, early morning.

If we could see the original, we would perhaps be astonished to find that the lady wears a very thin veil over her face and hair. Her eyes are a deep brown, her hair a beautiful auburn, and her dress a rich green with a touch of yellow. We cannot accuse her of vanity, for she wears no rings or ornaments of any kind.

Leonardo da Vinci loved problems. Even as a boy he would make up problems in arithmetic that would puzzle as well as interest his teachers. Here he has found a different kind of problem, which he has solved in his own way.

It seems as if each part of the face had an expression of its own, so that if the rest of the face were covered we could see that one alone. The left side of her face is thoughtful, the right side is smiling; her eyes are sad, the mouth is cheerful yet firm. There is hidden strength behind this face—it is as if she had discovered the secret of the world, but would allow no word of it to pass those lips so firmly closed. It is interesting to know, too, that the real Mona Lisa was one of the famous beauties in Florence.

The artist kept this portrait for several years, and then sold it to the King of France. It is now in the gallery of the Louvre at Paris.