"Human prosperity never rests but always craves more, till blown up with pride it totters and falls. From the opulent mansions pointed at by all passers-by none warns it away, none cries, 'Let no more riches enter!'" - Aeschylus

"Prosperity is only an instrument to be used, not a deity to be worshipped." - Calvin Coolidge

"There is an old-time toast which is golden for its beauty. 'When you ascend the hill of prosperity may you not meet a friend.'" - Mark Twain

"Prosperity is the surest breeder of insolence I know." - Mark Twain