ABSTRACT
I Age and differences of age are among the most basic I and crucial aspects of human life and determinants of human destiny. Every human being passes through different ages within his lifetime, and at each age he attains and uses different biological and intellectual capacities. Every stage in this progression constitutes an irreversible step in the unfolding of his life from its beginning to its end. At each stage he performs different tasks and roles in relation to other members of his society: from a child he becomes a father; from a pupil, a teacher; from a vigorous youth, a gradually aging adult.
