A generation which ignores history has no past — and no future.

El pasado es también el presente y el futuro. La nación que olvida está pérdida.

A nation which does not remember what it was yesterday, does not know what it is today, nor what it is trying to do. We are trying to do a futile thing if we do not know where we came from or what we have been about.

The nation which forgets its defenders will be itself forgotten.

In the words of a very famous dead person, 'A nation that does not know its history is doomed to do poorly on the Scholastic Aptitude Test.

Those who don't know history are doomed to repeat it

Those who cannot remember the past are condemned to repeat it […]

Whoso neglects learning in his youth, loses his past and is dead for the future.

It does not to dwell on dreams and forget to live, but it is equally foolish to ignore the past – never forget.

Where history means nothing. Lessons are forgotten. Memories – of humanity, of all that is humane – are lost.

We cannot build the future by avenging the past.

We are the United States of Amnesia, we learn nothing because we remember nothing.

A nation that does not honor its heroes will not long endure.

Those who cannot remember the past are condemned to repeat it.