This may look like a cliched version of the moral principle underlying the story of Doctor Faustus. It is very conventional, but effective in that it is a more popularized iconographical representation that is widely known. The addage: "If you wish upon a star, be careful what you wish for." rings true and is a great positive comparison to Marlowe's Faustus, in that Pinocchio wishes to be a real boy because he wants to be like everyone else. Whereas Doctor Faustus wants to obtain all the knowledge he can in order to supercede his race.
A not so popularly known comparison is that of The :Last Man on Earth, however it is more of a negative comparision, but a great contrast to the moralization of Pinocchio. In The Last Man on Earth, Dr. Robert Morgan is the only survivor of a devastating world-wide plague due to a mysterious immunity he acquired to the bacterium while working in Central America years ago. He is all alone now... or so it seems. As night falls, plague victims begin to leave their graves, part of a hellish undead army that''s thirsting for blood...his.
In both movies and in the play, one thing will always ring true either positive or negative and it is the best advice I have ever gotten from anyone and that is "Be careful what you wish for" and they always add, "Because you might not like what you get." In Pinocchio, he wished to be a real boy, and he got it, he enjoyed it, that was positive; in The Last Man on Earth, he wished to be alone, he got what he wanted, but found that is not what he wanted at all. Finally in Faustus, he wanted to obtain all the knowledge he could, but when the price laid heavy on his mind, he started to wonder if it was he wanted at all.