Pothos is the Greek word for "longing", a divine power (daimon).
According to the Greek author Pausanias (second century CE), the sculptor Skopas made statues of Eros, Himeros, and Pothos. They were exhibited in the sanctuary of Aphrodite in Megara.note[Pausanias, Guide to Greece 1.43.6.]
Aristobulus, one of the biographers of Alexander the Great, seems to have introduced the Pothos-motif in the histories of the Macedonian conqueror of the Achaemenid empire. He and all ancient historians after him believed that Alexander's inner drive was a kind of longing to see foreign countries. One of the attractions of the word was that an author who used it, could leave Alexander's reckless behavior during battles and sieges and his outrageous drinking habits unexplained. Like his legendary ancestor Achilles, the famous hero from Homer's Iliad, Alexander the Great had chosen to be famous and die young.It is possible that the official portraits of Alexander were influenced by the Pothos of Skopas. If so, the idea to link the king with a longing for knowledge was contemporary with his conquests.
The idea of "longing", can also used by found in the works of the Greek neoplatonic philosophers like Plotinus (205-270). These authors use pothos to describe our passion for beauty, our thirst for knowledge, and our longing for everything that is good and real. In their philosophy, our mind and soul are, so to speak, lower manifestations of the first principle; we have been "cast down" and locked up into matter, which is the lowest manifestation of the first principle. This being our condition, we want to go back, "up" in the cosmic hierarchy, to gain knowledge and experience beauty - in other words, to live in a higher reality.