Those who cannot remember the past are condemned to repeat it. - George Santayana
This famous statement has produced many paraphrases and variants:
Those who cannot learn from history are doomed to repeat it.
Those who do not remember their past are condemned to repeat their mistakes.
Those who do not read history are doomed to repeat it.
Those who fail to learn from the mistakes of their predecessors are destined to repeat them.
Those who do not know history's mistakes are doomed to repeat them.
I prefer Those that fail to learn from history, are doomed to repeat it.