¿Who is Gandalf?

Gandalf is the most powerfull wizard of the world of hobbit his wisdom is far superior to all thath i know about the hobbit.Gandalf is big old man with a gray beard and a hat like a marlin he stuff is greater than has blue eyes his robe is gray and carry a stuff greater than his body , it could be said that gandalf is inspired by a magician of the Middle Ages which would not be if not marlin, is a wizard of the Middle Ages odin which was a lot like magician and characterized same as gandalf. Gandalf is very passive and very powerful but it does not seem their physical. The most curious of gandalf is his appointments that he said in the movie like as the book, there one of that appointments "Only great power can contain evil, but that's not what I've learned, I've learned that are the everyday details, the gestures of ordinary people who keep evil there, the simple acts of love, Why bilbo Baggins?, perhaps because he is afraid". The actor of Gandalf who is Ian Mckellen is the best actor to do these kind of science fiction characters.In my personal opinion gandalf his the most integraly complete wizard from most thoose of kinds of books.