Marcus Tullius Cicero, Roman Philosopher, Politician, Lawyer, Rhetorician, Constitutionalist. c.106 BC – 7 December 43 B.C.

Cicero Denounces Catilinefresco by Cesare Maccari, 1882–88
Pro Plancio:

Gratitude is not only the greatest of virtues, but the parent of all the others.


(Catiline Oration 2.25):

On this side shame does battle; on that, impudence; here modesty, there debauchery; here faith, there deceit; here piety, there wickedness; here steadiness, there rage; here decency, there foulness; here restraint, there lust; here in short equity, temperance, courage, wisdom, all the virtues struggle with iniquity, dissipation, cowardice, foolhardiness – with all the vices. Finally wealth struggles against poverty, right thinking against depravity, sanity against madness – in sum, good hope against desperation in every circumstance.