Homines, quo plura habent, eo cupiunt ampliora. “The more men have, the more they desire.” — Justinian I (CE 485–565), promulgator of the Corpus Juris Civilis and other laws; he was the last Emperor who had Latin as a first language
Excellent! Similar to Seneca's Non qui parum habet, sed qui plus cupit, pauper est. (It is not the man who has too little, but the man who craves more, that is poor.)
...or Lucan's twist on it, describing the 'evil' hyperenergetic Caesar as nil actum credens cum quid superesset agendum (believing nothing done when there was something left to do) As a very driven person, I've always remembered that line -- not about possessions, but about achievements, which can be equally seductive...
