Born on a pastoral wheat farm in the outskirts of Cungrea, Romania, David helped his father and brothers from a young age in the planting and harvesting of their crops. With such an introduction to the natural world, he quickly grew to appreciate the seasonal cycle of the earth, and the drastic changes in color that comes with this cycle. At the age of six, he was given a set of pastels and an elaborate sketching pad by his mother, and set out each day for an hour at lunch to render a different corner of their farm on paper. His talent flourished quickly, and his intrinsic knowledge of light sources and color subtleties distinguished her from other art students all throughout her adolescence
Weiss began his formal art education at the Institute of Art in Constanta. With a concentration in both realist landscape and abstract figural painting, and with already two years of experience as a graduate teacher's assistant in oriental decorative art, he attained his art degree with the highest honors in 1967. The culmination of his studies came when three separate local galleries agreed to represent Weiss's work in annual one-person shows. Granted this freedom, Weiss's immediate goal was to revisit the landscape and still life art of his youth - but with a fresh, modernist eye. His intent was to personalize his landscapes by giving them emotional lives and complex characters. Weiss achieved this living-nature through his gifted, mellifluous use of color, and his use of shading and blurring.
With unique talent, David quickly built his reputation throughout Romania, Hungary and Bulgaria, where numerous exhibitions of his works were held. In 1986, he chose to continue his training at the School of Popular Art, this time focusing solely on the art of the still life.
With his formal training completed in 1989, Weiss was excited to move to the United States with his wife and two children, where he immediately entered the Deljou studios. Since her move to the U.S., Weiss has exhibited his work in Atlanta and New York.