1. A text visualization method comprising: receiving vectors that characterize conceptual content of a plurality of text documents, each document being represented by a vector of arbitrary length; and displaying a multi-dimensional representation of the document collection that conveys information about topics and subtopics described by the plurality of text documents, each document being represented by a multi-dimensional glyph, the displaying including sorting the glyphs into groups and arranging the groups into clusters such that clusters containing documents that are conceptually similar are located together in near proximity.