The Grey Wanderer

Mithrandir is Sindarin for "The Grey Wanderer" or "The Grey Pilgrim". He is ofcourse known for the beautiful quote: "All that is gold does not glitter, Not all those who *wander* are lost; The old that is strong does not wither, Deep roots are not reached by the frost.".
He has many other names such as Tharkun, Incánus, and Olorin but he's better known by his friends as Gandalf The Grey.