Born in New York City in 1953, Halley developed a distinctive visual vocabulary based on brightly colored geometric forms, particularly squares, rectangles, and connecting lines. Unlike earlier abstract artists who viewed geometry as a universal or spiritual language, Halley used these forms as metaphors for the realities of contemporary society. His recurring motifs of “cells,” “prisons,” and “conduits” symbolize the isolation of individuals and the networks that connect them within increasingly technological and regulated environments.

His paintings are instantly recognizable for their vivid fluorescent colors, textured surfaces, and architectural compositions. By combining influences from Minimalism, Conceptual Art, social theory, and postmodern philosophy, Halley created works that examine themes such as communication, confinement, urbanization, and digital connectivity.

Beyond his studio practice, Halley has been an influential writer and critic whose essays helped shape debates around postmodernism and contemporary art theory. His ideas played a significant role in defining the intellectual foundations of the Neo-Geo movement and challenged traditional interpretations of abstraction.