The circumstances of the world are so variable that an irrevocable purpose or opinion is almost synonymous with a foolish one. - William Seward
It is always thus, impelled by a state of mind which is destined not to last, we make our irrevocable decisions - Marcel Proust
Nor deem the irrevocable PastAs wholly wasted, wholly vain, If, rising on its wrecks, at lastTo something nobler we attain. - Henry Wadsworth Longfellow
...tests are a gift. And great tests are a great gift. To fail the test is a misfortune. But to refuse the test is to refuse the gift, and something worse, more irrevocable, than misfortune. - Lois McMaster Bujold
It is hard to have patience with people who say "There is no death" or "Death doesn't matter." There is death. And whatever is matters. And whatever happens has consequences, and it and they are irrevocable and irreversible. You might as well say that birth doesn't matter. - C. S. Lewis