⁹ What has been will be again,
    what has been done will be done again;
    there is nothing new under the sun.

Ecclesiastes 1:9 New International Version 

Or 

“Those who do not learn history are doomed to repeat it.” The quote is most likely due to writer and philosopher George Santayana, and in its original form it read, “Those who cannot remember the past are condemned to repeat it.”

We have been here before—view this video from Cheers eons ago.

‘nuff said!