He totally rejected the idea that structure hinders the creative process but saw it as a tool to preserve it. I remember how displeased he was when I used a stanza of verse that he had helped me with to do an "on stage response" during a pageant. The response was marked down because it was too structured. With dad, poetry was not only dance but it was also music as well. He once related to me how the mechanics of music and poetry paralleled. I've concluded that his "theory of poetry writing" relates to his current teaching background as a math professor and his former physics teaching background, especially as I remember the way he tutored me when I was pursing my engineering degree.