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.
When we have become free, we need not go mad and throw up society and rush off to die in the forest or the cave; we shall remain where we were but we shall understand the whole thing. The same phenomena will remain but with a new meaning.