From apprehended thing, each inference
With practicality concerning life,
This you may test and try, confirm the right
Or contravene the wrong which reasons there.
The offspring of the sickly faith must prove
Sickly act also: stop a monster-birth!
When water 's in the cup, and not the cloud,
Then is the proper time for chemic test:
Belief permits your skill to operate
When, drop by drop condensed from misty heaven,