In Paris he left the world all full of matter; here he finds absolute Vacua.
"The Approach to Philosophy"
Ralph Barton Perry
In reality, however, the sum of our actions and cognitions is no series of facts and intervening Vacua, but a continuous stream.
"Human, All-Too-Human, Part II"
Friedrich Nietzsche
The study of apparatus for obtaining more perfect Vacua was unceasingly carried on, for Edison realized that in this there lay a potent factor of ultimate success.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin