Good can exist without evil， whereas evil cannot exist without good.

The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

Those of us who have been fortunate have a duty to give back.Whether one gives a lot as one goes along as I do, or a little and then a lot (when one dies) as Warren does, is a matter of personal preference.

挑战是让观众相信角色，而不是演员。

要养活世界，我们必须先了解它。