If a painter once devoted himself to dynamism and now abandons it, denies it and even criticizes it, it is his own business. This does not mean, howe… - Fortunato Depero

p. 14; Cited in: Maurizio Scudiero, ‎David Leiber, ‎Fortunato Depero (1986) Depero futurista & New York: il futurismo e l'arte pubblicitaria, p. 112

The art of the future will be largely advertising.
that bold and unimpeachable lesson I have learned from museums and great works from the past—
all art for centuries past has been marked by advertising purposes: the exaltation of the warrior, the saint; documentation of deeds, ceremonies, and historical personages depicted at their victories, with their symbols, in the regalia of command and splendor—
even their highest products were simultaneously meant to glorify something: architecture, royal palaces, thrones, drapery, halberds, standards, heraldry and arms of every sort—
there is scarcely an ancient work that doesn’t have advertising motifs, a garland with a trophy, with weapons of war and victory, all stamped with seals and the original symbols of clans, all with the self-celebrating freedom of ultra-advertising

The first and foremost critic of a work of art is the artist who created it. Give him every means to illustrate it and make it known. If an artist awaits celebrity or gratefulness for his work through other people, he will have the time to die a thousand times for sheer hunger.