St. George William Joseph Stock, A Guide to Stoicism
“ In short, it was the business of the man of virtue to know and to do what ought to be done, for what ought to be done implied wisdom in choice, courage in endurance, justice in assignment and temperance in abiding by ones conviction. One virtue never acted by itself, but always on the advice of a committee. The obverse to this paradox—He who has one vice has all vices—was a conclusion which the Stoics did not shrink from drawing. One might lose part of one's Corinthian ware and still retain the rest, but to lose one virtue—if virtue could be lost—would be to lose all along with it. ”
