"The creative process lies not in imitating, but in paralleling nature ;translating the impulse received from nature into the medium of expression, thus vitalizing this medium. The picture should be alive, the statue should be alive and every work of art should be alive."Thus Hans Hofmann wrote nearly half a century ago. He left the Old World ;Germany ;for the New, at the age of 50. In 1948 when the retrospective exhibition was held at the Addison Gallery of American Art, Hofmann was 68; he had been in the United States for 18 years, a citizen for seven years.