Just because something's been good in the past doesn't mean it will continue to be good.
David ChangYour future takes precedence over your past. Focus on your future, rather than on the past.
Gary Ryan BlairIn the future as in the past, both Clausewitz and Sun Tzu will undoubtedly have a lot to offer.
Martin Van CreveldMy future is in my past and my past is my present. I must now make the present my future.
Vladimir Horowitz