In principle it was something more similar to what we call character, today it has a broader meaning since it is an individual to which we attribute its own characteristics, albeit with the same value as all of its group. This understands best legally, where a person has rights even if he is not human. In grammar it is a category of pronoun, which is associated in the verb with who acts and to what or who. It is usually used in a phrase as "someone". It comes to us from the Latin 'person' ("mask of the actor" ) but has a background in other languages.
Person: Person the word comes from the Greek Theatre. Word introduced by modern psychologists in their texts of personality psychology. The prefix per u, per means elevation and they are, mean sound sound elevation would name given to the mask that the Greek actors, used these masks had the quality to raise the sound when the actor spoke to be heard by the audience.??