Physical Water Scarcity

Famous quotes containing the words physical and/or water:

“I hope I may claim in the present work to have made it probable that the laws of arithmetic are analytic judgments and consequently a priori. Arithmetic thus becomes simply a development of logic, and every proposition of arithmetic a law of logic, albeit a derivative one. To apply arithmetic in the physical sciences is to bring logic to bear on observed facts; calculation becomes deduction.”
—Gottlob Frege (1848–1925)

“All that could run or leap or swim
Whether in wood, water or cloud,
Acclaiming, proclaiming, declaiming Him.”
—William Butler Yeats (1865–1939)