No authority can save us, no beliefs. If there is a God, all can find Him. No one needs to be told it is warm; all can discover it for themselves. So it should be with God. He should be a fact in the consciousness of every person.
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.
My activism really is for myself, because I see places in the world where I feel I should be. If there is something really bad, really evil, happening somewhere, then that is where I should be. I need, for myself, to feel that I have stood there. It feels a lot better than just watching it on television.
A man who has no mental needs, because his intellect is of the narrow and normal amount, is, in the strict sense of the word, what is called a philistine.
If you find a neighbor in need, you're responsible for serving that neighbor in need, you're responsible for loving a neighbor just like you'd like to love yourself.