The most intense conflicts, if overcome, leave behind a sense of security and calm that is not easily disturbed. It is just these intense conflicts and their conflagration which are needed to produce valuable and lasting results.
Source: In Readers' Digest, Jun 1990.
-- Carl Gustav Jung, (Jul 26 1875-1961), Swiss psychologist, psychiatrist; The Father of Analytical Psychology classified personalities as extroverted and introverted; wrote Psychology of the Unconcious, 1912.