Those who cannot remember the past are condemned to repeat it without a sense of ironic futility.

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

Even if we remember the past, odds are good we'll still repeat it.

Always remember you're unique, just like everyone else

Progress is impossible without change, and those who cannot change their minds cannot change anything.

The ideas which now pass for brilliant innovations and advances are in fact mere revivals of ancient errors, and a further proof of the dictum that those who are ignorant of the past are condemned to repeat it.