| 2024-11-01 | Writer of the "Phaedrus" circa 370 B.C. |
| 2024-03-14 | Who said "Courage is knowing what not to fear" |
| 2024-01-21 | "Allegory of the cave" philosopher |
| 2024-01-15 | "Republic" philosopher |
| 2023-12-11 | Philosopher who studied under Socrates |
| 2023-10-29 | Who said "Opinion is the medium between knowledge and ignorance" |
| 2021-10-28 | Author of the "Symposium" |
| 2020-03-16 | Philosopher who tutored Aristotle |
| 2019-08-19 | Greek philosopher who was a student of Socrates |
| 2018-02-01 | Student of Socrates |
| 2017-09-17 | One-named philosopher |
| 2014-02-03 | Philosopher who said "Writing is the geometry of the soul" |
| 2014-01-21 | Student of Socrates |
| 2013-03-16 | He wrote "No human thing is of serious importance" |
| 2012-11-01 | Figure in Raphael's "The School of Athens" |
| 2012-06-17 | He wrote "Knowledge is the food of the soul" |
| 2011-12-30 | Academy head |
| 2011-12-05 | Philosopher who wrote the "Republic" |
| 2011-10-03 | Student of Socrates |
| 2011-09-24 | "Apology" author |
| 2008-06-10 | "The Republic" philosopher |
| 2007-01-07 | Academy head |
| 2005-05-16 | "The Republic" writer |
| 2005-03-29 | "The Republic" philosopher |
| 2004-11-17 | Aristotle's teacher |
| 2004-02-16 | Ancient Greek thinker |
| 2003-10-10 | Philosophy 101 subject |
| 2003-09-10 | Dialogue writer |
| 2003-09-09 | "Symposium" author |
| 2002-10-28 | Academy founder |
| 2000-11-09 | Dialogue writer |
| 2000-02-11 | Xenocrates' mentor |
| 1999-12-31 | Academy founder |
| 1998-12-20 | Academy head |
| 1998-08-13 | "The Republic" writer |
| 1998-03-02 | Philosopher who wrote the "Republic" |
| 1997-03-07 | Academy founder |
| 1996-06-01 | "Beetle Bailey" character |
| 1996-05-22 | "Republic" author |
| 1996-04-21 | Academy founder |
| 1995-08-22 | Disciple of Socrates |
| 1995-05-07 | Dialogue writer |
| 1994-01-05 | "Symposium" man |
| 1993-12-19 | "Beetle Bailey" intellect |
| 1993-12-17 | Greek Academy founder |