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

We are in the first age since the dawn of civilization in which people have dared to think it practicable to make the benefits of civilization available to the whole human race.

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

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

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

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

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