Transitory

I like my transit especially transitory.
I extend my effective lifespan by my hurry,
So I rush past plenty of human traffic every day,
But this man seemed more human in some way.
He moved slowly, stooped and weak, and humanity's
Purest measure is weakness, but mostly
I'm struck by the sense that I'm less for not knowing his story,
Though this sense, too, is transitory.