I prefer that for my own satisfaction over radio, there's no audience. TV, there's no audience. I need the response of the audience, even if it's a silent response.
I do not need to know all things. I remind myself that it is sufficient that I know what I know and know that without believing that I will always know what I know or that what I know will always be true.
Certainly we do not need quantum mechanics for macroscopic objects, which are well described by classical physics - this is the reason why quantum mechanics seems so foreign to our everyday existence.
We need be careful how we deal with those about us, when every death carries to some small circle of survivors, thoughts of so much omitted, and so little done- of so many things forgotten, and so many more which might have been repaired! There is no remorse so deep as that which is unavailing; if we would be spared its tortures, let us remember this, in time.