We live in reference to past experience and not to future events, however inevitable.
History counsels caution.
If nobody can learn from the past, then there's no point in raking it up.
Hindsight's a wonderful thing. If we all had it there would be no history to write about.
Everyone must learn from the past.
Don't let the old story repeat itself now. Arm yourself with all that's happened.
Respect the past; you never know how it may affect you.
The past can be used to renew the present, not just to bury it.
I avoid looking back. I prefer good memories to regrets.