Historical clue formulations

• Which, in Latin — 2015-09-25
• Q.E.D. part — 2011-07-14
• "Eris ___ sum" ("You will be what I am") — 2010-05-09
• Part of Q.E.D. — 2008-08-06
• Part of Q.E.D. — 2003-03-03
• Part of Q.E.D. — 2000-08-06
• Part of Q.E.D. — 2000-06-12
• Part of Q.E.D. — 2000-01-24
• Part of Q.E.D. — 1997-03-31
• Part of Q.E.D. — 1996-11-03
• Part of Q.E.D. — 1994-11-26
• Part of 25-Down — 1994-01-28