"Study the past if you would define the future." - Confucius
One might look at this saying and think, "This is just another way of saying 'those who do not learn history are doomed to repeat it'." That is not quite right.
I find the saying by Confucius to be a lot more all-encompassing than the "history" quote, which is strictly about not repeating the mistakes of the past. The Confucius quote is also about building upon what we already know.