Never quit. It is the easiest cop-out in the world. Set a goal and don't quit until you attain it. When you do attain it, set another goal, and don't quit until you reach it. Never quit.
1564 - 1616
1803 – 1882
1854 – 1900
1942 – 2016
1928 – 2014
1835 – 1910
1869 – 1948
1884 – 1962
1898 – 1963
1929 – 1993
1879 – 1955
1809 – 1865