This World Quotes (page 13)
What's this flesh? A little cruded milk. Fantastical puff-paste. Our bodies are weaker than those. Paper prisons boys use to keep flies in; more contemptible, Since our is to preserve earth-worms. Didst thou ever seen A lark in a cage? Such is the soul in the body: this world. Is like her little turf of grass, and the heaven o'er our heads Like her looking-glass, only gives us a miserable knowledge Of the small compass of our prison.
John Webster