an inner process stands in need of outward criteria - Ludwig Wittgenstein

If a sign is not necessary then it is meaningless. That is the meaning of Occam’s razor. (If everything in the symbolism works as though a sign had meaning, then it has meaning.)

The man who said that one cannot step into the same river twice said something wrong; one can step into the same river twice.

If you have a room which you do not want certain people to get into, put a lock on it for which they do not have the key. But there is no point in talking to them about it, unless of course you want them to admire the room from outside! The honorable thing to do is put a lock on the door which will be noticed only by those who can open it, not by the rest.