in retrospect
When looked back upon as a past event; as can be seen now, but not at the time.
Synonym: in hindsight
Near-synonym: retrospectively
Trying to expand the business into the Middle East was doomed to failure. In retrospect, we shouldn't have bothered.
Travel is glamorous only in retrospect. Paul Theroux
I believe that no endeavor that is worthwhile is simple in prospect; if it is right, it will be simple in retrospect. Edward Teller
I am a writer of books in retrospect. I talk in order to understand; I teach in order to learn. Robert Frost
The mark of a good action is that it appears inevitable in retrospect. Robert Louis Stevenson
Evil is obvious only in retrospect. Gloria Steinem
In retrospect I would say from Donald Duck I have learned more about life than from all the schools I ever attended. Gottfried Helnwein