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

This quote by Will Durant talks to the fragility of civilization and how it is dependent on the environment. It suggests that civilization is not an irreversible fixture, however rather something that is constantly changing and progressing. The quote implies that civilization is at the grace of the environment, which it can be altered or ruined without caution. This is a suggestion that we must be mindful of our influence on the environment, as it can have a direct impact on our civilization. It likewise serves as a caution that we should be prepared for abrupt changes in our environment, as they can have an extreme effect on our lifestyle. Eventually, this quote serves as a reminder that we need to be mindful of our environment and take actions to protect it, as it is the foundation of our civilization.