Two camels

Once I saw a chemist take a pinch of powder

Simple dust it seemed and half-unstop a phial:

Out dropped harmless dew. " Mixed nothings make" quoth he

"Something!" So they did: a thunderclap, but louder

Lightning-flash, but fiercer put spectators' nerves to trial:

Sure enough, we learned what was, imagined what might be.

Had I no experience how a lip's mere tremble,

Look's half hesitation, cheek's just change of color,

These effect a heartquake, how should I conceive

What a heaven there may be? Let it but resemble

Earth myself have known! No bliss that' s finer, fuller,

Only bliss that lasts, they say, and fain would I believe.