For this alone is lacking even to God, to make undone the things that have once been done. (Quoting Agathon).
donequotes
Beside these there is no other way; for the act is necessarily either done or not done, and those who act either have knowledge or do not.
We sometimes forget even what we have done, so how much more what we have thought.
You’ll have a better understanding of what was actually done if you start by knowing what had to be done – what always and everywhere has to be done by anyone who has a clear idea about what’s what.
done / idea / understanding
Two hours. One hundred and twenty minutes. Anything might be done in that time. Anything. Nothing. Oh, he had had hundreds of hours, and what had he done with them? Wasted them, spilt the precious minutes as though his reservoir were inexhaustible.