I agree that they have different functions at different times and their functions are equally important.

Reason: They are not the same thing. Whether they happen or not, the occurrence of the former means that the latter may happen, while the occurrence of the latter indicates the occurrence of the former.

No one, the former can't be the former that leads to the possibility; The latter is a phenomenon that does not exist in the world and does not need the support of anything.

If you insist on sophistry: since you are doing the action of "saying", say what you want to say. "Say" is in a narrow sense, and "do" includes "say", say and do, say and not do. So it is impossible to say it is more important than doing it: for example, the earth is more important than the solar system.