Historical Years
21 A.D., 21 B.C., 1921, 2021, etc.
Read more about this topic: 21 (number)
Famous quotes containing the words historical and/or years:
“What are your historical Facts; still more your biographical? Wilt thou know a Man ... by stringing-together beadrolls of what thou namest Facts?”
—Thomas Carlyle (1795–1881)
“In many respects, the preteen years mimic adolescence, but without one essential ingredient: hormones.”
—Lawrence Balter (20th century)