Quarrels would not last long if the fault was only on one side. François de La Rochefoucauld
For a time I would feel I belonged still to a world of straightforward facts; but the feeling would not last long. Something would turn up to scare it away. Joseph Conrad
I'm often dating people, but I don't say it because you sort of know it won't last long. Graham Norton
Courtesy that is all on one side cannot last long. French Proverb
The joy of a poor man does not last long. Brazilian Proverb
Courtesy on one side can never last long. Persian Proverb