Here's a Shakespearean quote I love:
Now entertain conjecture of a time
When creeping murmur and the poring dark
Fills the wide vessel of the universe.
---Henry V, Prologue
Auguries of Innocence
To see a World in a Grain of Sand
And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand
And Eternity in an hour.
-William Blake (1709-1784)