Robert Filliou was a French economist and artist associated with Fluxus who produced works as a filmmaker, action poet, sculptor, and director of artistic happenings. His practice emphasized the autonomy of the individual and was rooted in the life/art intersections that exist in Fluxus philosophy. Filliou was influential in the development of the Mail Art practice and is well known for his proclamation of Art’s Birthday, which continues to be celebrated to this day.