The past is always tense, the future perfect.

The aim of every artist is to arrest motion, which is life, by artificial means and hold it fixed so that a hundred years later, when a stranger looks at it, it moves again since it is life.

善于灭火的人,不会迎着烟雾去扑;善于防备水灾的人,不会在水流湍急的地方去防护。