His colorful expressionistic paintings explore the psychological effects of the environment on individuals. Figures are often abstracted to the point of the grotesque and overwhelmed or torn apart by their surroundings. Shapes interact with figures in space as lines connect atmospheres in different directions, creating islands with systems of thought. Horner communicates his viewpoint thorough a unique style of painting, which samples from traditional and contemporary abstract/expressionist, surrealist, pop art.