survive the test of time
1. To work, function, or endure for a very long time. (A less common variant of "stand/withstand the test of time.") As computer technology improves, it's ironically getting harder and harder to find a piece of equipment that can survive the test of time.
2. To be particularly popular or well regarded for a long period of time. Of all the other cast members, hers was the only career that survived the test of time.
no plan survives contact with the enemy
Military plans always need to be changed once they are enacted in real-life military situations. The saying emphasizes the need for flexibility, as opposed to strict adherence to strategy. It is attributed to Helmuth von Moltke the Elder, a 19th-century Prussian field marshal. Men, be ready to make changes on the battlefield—we all know that no plan survives contact with the enemy.