Persons who go through a great deal of trouble or pain to attain something tend to value it more highly than persons who attain the same thing with a minimum of effort.
1082-1885
1926 - 1962
1917-1963
1732 - 1799
1971 -
1706 - 1790
1929 – 1968
1947-
1564 - 1616
1960-
