
The Italian artist explains the Greek myth through his traditional play of light and shadow.

The human being is a well-oiled machine, but it has flaws.
One of them affects that concept as ethereal and mysterious as the soul. Psychology, some call it. If we stick to the latter, the problems of the human psyche are practically endless.
Vanity, for example, would not fall within that group of problems; however, it can be a double-edged sword. Greek mythology taught us this danger through the myth of Narcissus.
The myth
In the Hellenic mythological narrative, we are presented with a very proud and insensitive young man in its cosmogony. A guy who keeps rejecting suitors so that sooner or later, the divine punishment had to come for such a braggart.
Narcissus was not going to be an exception.
Among his many suitors who took a good cut was Aminias; the poor man loved Narcissus deeply, but that did not prevent him from rejecting him in nasty manners and with malice. Among these taunts, he gives him a sword, with which the same Aminias will commit suicide in front of the house of Narcissus himself (did he think anything else was going to happen?). While the suitor was dying, he had time to beg the goddess Nemesis to give him an exemplary chastisement Narcissus, making him suffer the suffering of unrequited love in his flesh. Having launched the supplication, Aminias died.
As expected, Narcissus spent enough of that death in front of his house. The guy continued with his business until, one day, he came to a pond.
He saw his own reflection in its waters, falling in love with it. Intoxicated by this attraction, he did not realize that he saw himself. He leaned towards the water’s surface to kiss that attractive young man, recognizing the tremendous deception.
At that moment, shocked by the discovery, he fell into the water and drowned. Saddened by this pitiful spectacle, the gods decided that his body would become a flower, the daffodil we all know.
The painting
Knowing the myth, we can better understand Caravaggio’s painting, which shows us the moment in which Narcissus is engrossed contemplating his reflection in the pond water.
When contemplating the painting, we can make a mythological reading (what it tells the story of Narcissus, the specific passage of the myth that shows us and that is clear) and another more allegorical reading, the messages that the artist wanted to convey through this representation.
We see in the upper part the real character, who looks down on his aquatic antagonist. Two parts divide the work, an upper and a lower one, that is opposed both in presentation and composition.

Above (the real Narcissus), we see the well-defined light in the arms, neck, and face and some flashes here and there. On the contrary, the lower part (the reflection) is very dark, with a very attenuated image that transmits fragility, which seems to foreshadow the fatal outcome of the myth.
The figure of Narcissus, the luminous one, has his left hand coming out of the frame, and we do not see the tips of his fingers; the lower reflection as well, but also part of his back disappears from the painting beyond the margins.
This technique enlarges the figure of the protagonist and promotes the sensation of proximity. A very distant anteroom to the three dimensions, of which there are many other examples throughout the History of Art.

It is as if we could almost reach out and touch Narcissus.
This technique was prevalent in Caravaggio, who liked his paintings to create an impact. Spontaneity and closeness are two common aspects of his works. He wanted the viewer to feel that the characters were about to fall at his feet.
If we look at the painting again, and as mentioned before, we can see that the reflection of Narcissus is somewhat different. It seems older and worn out. In the shoulder canvas, we can appreciate Caravaggio’s mastery in playing with lighting in his works. The ability to put darkness into light was a revolution in his time, so much so that this technique ended up having its name: tenebrism.

Some interpret this luminous contra-position between the upper and lower parts as the visualization of the Ego confronting one’s self-consciousness.
Some even venture to theorize that Narcissus can be read as an explanation of Caravaggio’s psyche, a man of great vanity.
Focusing on the reflection again, we can consider it as that dark place we all have and where aspects such as excessive self-contemplation or selfishness nest.
Above is the conscious, luminous, beautiful, and evident self; below is the egocentric subconscious, which is what we want to hide and which is the shadow of any human being.