Dust is the only secret

Dust is the only secret,
Death the only one
You cannot find out all about
In his native town:
Nobody knew his father,
Never was a boy,
Hadn't any playmates
Or early history.

Industrious, laconic,
Punctual, sedate,
Bolder than a Brigand,
Swifter than a Fleet,
Builds like a bird too,
Christ robs the nest—
Robin after robin
Smuggled to rest!