Every science begins as philosophy and ends as art; it arise... - Will Durant

"Education is a progressive discovery of our own ignorance."

"The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds."

"Every science begins as philosophy and ends as art; it arises in hypothesis and flows into achievement."

"To say nothing, especially when speaking, is half the art of diplomacy."

"Civilization exists by geological consent, subject to change without notice."