Hello emarbe: (1) http://www.thesaurus.com/browse/improve (2) A person who is self-taught, is termed an "auto-didact" (3) To improve the mind is one way of expressing your idea. To educate one's self concerning cultures is another way of thinking of it. Another way of expressing this idea is to refer to a person as "metropolitan" or "eclectic". Another way of expressing this idea would be to indicate that a person has an "expansive" or "expanded" view of culture. The Merriam Webster Dictionary defines Open Minded as: "receptive to arguments or ideas" (4) A narrow minded person is said to be "tunnel visioned". Sometimes, a person with a limited understanding is said to operate in a "conceit". . Merriam Webster defines Narrow Minded as: lacking in tolerance or breadth of vision : petty Another way of distinguishing the basic differences would be to understand that An Open Minded person seeks to understand culture in all contexts. The Narrow Minded person would only be interested in imposing his culture upon other cultures.