History repeats itself. That's one of the things wrong with history.

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

History repeats itself: historians repeat each other.

We say, “If we do not learn from history, we are doomed to repeat it.” We must precisely state that what we repeat is not history but our errors under ever-changing material conditions. History does not repeat itself; it cannot. Nothing can. The first law of the universe is everything changes, all the time. Only those who see history as events and not as a process can make this error.

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

Those who fail to learn from history are doomed to repeat it.

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

The more we keep silent, the more history repeats itself.

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

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

Those who do not remember the past are condemned to repeat it.

Sometimes, when people have a low opinion of their own worth — or, perhaps, when they refuse responsibility for their lives — they choose a new acquaintance, of precisely the type who proved troublesome in the past. Such people don’t believe that they deserve any better — so they don’t go looking for it. Or, perhaps, they don’t want the trouble of better. Freud called this a “repetition compulsion.” He thought of it as an unconscious drive to repeat the horrors of the past — sometimes, perhaps, to formulate those horrors more precisely, sometimes to attempt more active mastery and sometimes, perhaps, because no alternatives beckon. People create their worlds with the tools they have directly at hand. Faulty tools produce faulty results. Repeated use of the same faulty tools produces the same faulty results. It is in this manner that those who fail to learn from the past doom themselves to repeat it. It’s partly fate. It’s partly inability. It’s partly … unwillingness to learn? Refusal to learn? Motivated refusal to learn?

If history repeats itself, and the unexpected always happens, how incapable must Man be of learning from experience.

Those unable to catalog the past are doomed to repeat it.