“no calamity greater than to be discontented with one's lot;”
“The getting that (favour) leads to the apprehension (of losing it), and the losing it leads to the fear of (still greater calamity):—this is what is meant by saying that favour and disgrace would seem equally to be feared.”
“There is no disaster greater than not being content; There is no misfortune greater than being covetous.”
“There is no guilt greater than to sanction ambition;”
“no fault greater than the wish to be getting.”
“There is no greater danger than underestimating your opponent.”