Jan Garden Castro: You also have a special relationship to the numbers six and two. Could you talk about numbers as signs?
Robert Indiana: I’m particularly interested in two because it takes a couple of people to make love, and six because my father was born into a family of six members in the month of June, he worked for Phillips 66, and he went west on Highway 66 when he left my mother, passing all those little signs on farmers’ fences that say “use 666,” which is also the sign of the devil—that’s how my mother felt about him because he had left her, you see. And it’s a nice number. I’m not fond of all numbers, but I’m very fond of two and six.
Excerpt from Jan Garden Castro. “More Famous than John Dillinger: A Conversation with Robert Indiana.” Sculpture 28, no. 2 (2009), pp. 44–45.