Aphorisms

Uncommon Knowledge (1996)
Semi-Certainties (1998)
Open Secrets (2000)
Briefs (2001)
Personal Effects (2003)
A Is for Aphorism (2006)
All the Aphorisms of John Robert Colombo (2006)
Indifferences (2009)
Imponderables (2011)
A Quaint and Curious Volume of Forgotten Lore (2012)
Uncommonplaces (2014, 2015)