“We have been God-like in our planned breeding of our domestic plants and animals but rabbit-like in our unplanned breeding of ourselves.”

“The supreme accomplishment is to blur the line between work and play.”

“The history of almost every civilization furnishes examples of geographical expansion coinciding with deterioration in quality.”

“Civilization is a movement and not a condition a voyage and not a harbor.”

“Civilization is a movement - not a condition a voyage - not a harbour.”

“To be able to fill leisure intelligently is the last product of civilization.”

“We have been God-like in our planned breeding of our domestic plants and animals but rabbit-like in our unplanned breeding of ourselves.”