How to evaluate the life of Arthur Miller, a famous American playwright?

In his creative career of nearly 70 years, Miller wrote 35 plays, 20 radio plays, 1 novel, 6 collections of novels and 4 screenplays. He made outstanding contributions to American drama in the 20th century. Miller tends to face reality, and his writing theme mainly focuses on social problems and contradictions between family members. As critics believe, his works discuss broader social and economic issues that determine personal suffering.