| 2024-12-07 | Beliefs associated with Plato |
| 2024-12-01 | Things to strive for |
| 2024-08-11 | Guiding principles |
| 2023-01-13 | Things to live up to |
| 2021-12-05 | What 10s represent |
| 2021-02-21 | Things many people lose as they grow older |
| 2020-01-29 | Lofty ambitions |
| 2019-10-04 | Paradigms |
| 2018-07-22 | Lofty standards |
| 2018-04-15 | Paragons |
| 2016-05-12 | Worthy pursuits |
| 2015-03-24 | World peace and the golden rule |
| 2014-03-02 | Paradigms |
| 2013-07-24 | 10s, say |
| 2012-08-05 | High standards |
| 2011-07-12 | Things to live up to |
| 2009-11-26 | Paradigms |
| 2009-07-19 | Topic in transcendentalism |
| 2009-05-27 | Worthy principles |
| 2009-03-13 | They can't get any better |
| 2008-09-04 | Life, liberty and the pursuit of happiness |
| 2006-03-06 | Standards of perfection |
| 2006-03-05 | Tens, e.g. |
| 2005-03-31 | Paragons |
| 2004-12-22 | What 10's represent |
| 2004-12-15 | Points in a lofty speech |
| 2003-08-09 | High marks |
| 2003-06-03 | Paradigms |
| 2003-04-02 | Worthy principles |
| 2002-10-06 | 10's |
| 2002-05-08 | Tens, perhaps |
| 2002-03-01 | Guiding stars, to use a metaphor |
| 2001-04-29 | Paragons |
| 2001-03-14 | High standards |
| 1999-10-29 | High ends |
| 1999-06-09 | Things to uphold |
| 1997-12-01 | Paragons |
| 1996-01-14 | Models |
| 1995-09-06 | Goals |
| 1995-03-25 | Paragons |
| 1994-11-21 | Standards of perfection |