Once you know it, though, you cannot forget it.

NEWYORKER: The Book of Bach

However, you cannot forget that the side which won the 2003 Grand Slam and went on to win the World Cup lost three Grand Slam matches before they won their first Slam, so if England lose on Saturday, this side should not be written off.

BBC: Six Nations: Jeremy Guscott on Ireland v England

LONDON, England (CNN) -- It is a common scenario: you are on medication but you forget to take it -- or worse, you cannot remember whether you took the pill you were due to take an hour ago.

CNN: Medication reminder for elderly

"The new treaty says to every United Nations member that you cannot simply 'export and forget, '" Kimball said.

NPR: Optimism In UN Over 1st Global Arms Trade Treaty

Even if you forget the ideology, that status quo cannot be very efficient and it is efficiency that the U.S. has lost.

FORBES: Why A Romney Win In November Won't Mean Big Changes

We cannot forget every one of your family members either, those who welcomed you home, sometimes very broken, to help your repair yourselves as best you can.

FORBES: My Hero Of WWII

But again, we cannot forget -- and I think -- I'm sure you talked about, if not wrote about it -- the major step that seems to have been taken by Republicans in acknowledging that using the debt ceiling for leverage did no one any good.

WHITEHOUSE: Press Briefing