That is, as long as price stability – an objective of the highest priority – has been met, a central bank can pursue its other objectives. For example, in advanced economies in general, where prices have been maintained at low levels as a trend, financial system stability is sometimes viewed as more important than price stability, which is considered to have been achieved already.
That would sound reasonable, considering that a large-scale formation of financial imbalances and their collapse, just like the one observed before and after the Lehman shock, occurred when price stability had generally been maintained.