If you're seeing this message, it means we're having trouble loading external resources on our website.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
“The challenge of the next half century is whether we have the wisdom to use [our] wealth to enrich and elevate our national life and to advance the quality of our American civilization.
“Your imagination, your initiative, and your indignation will determine whether we build a society where progress is the servant of our needs or a society where old values and new visions are buried under unbridled growth. For in your time we have the opportunity to move not only toward the rich society and the powerful society, but upward to the Great Society.”
-President Lyndon B. Johnson, Commencement speech at the University of Michigan, 1964