This chronic state of strain and excitement in everyday matters makes a mental atmosphere which is akin to what the material atmosphere would be if we were persistently kicking up a dust in the road every step we took.

Every one seems to be stirring up his own especial and peculiar dust and adding it to every one else's especial and peculiar dust.
We are all mentally, morally and spiritually sneezing or choking with our own dust and the dust of other people.

How is it possible for us to get any clear, all-round view of life so long as the dust stirring habit is on us?
So far from being able to enlarge our horizon, we can get no horizon at all, and so no perspective until this human dust is laid.

And there is just this one thing about it, that is a delight to think of: When we know how to live so that our own dust is laid, that very habit of life keeps us clear from the dust of other people.

Not only that, but when we are free from dust ourselves, the dust that the other men are stirring up about us does not interfere with our view of them.