Suzanne Farrell

You don't learn from a situation where you do something well. You enjoy it and you give yourself credit, but you don't really learn from that. You learn from trial and error, trial and error, all the time.

The thing about dancing - what it taught me all those years - is it gives you an amazing sense of discipline in forcing yourself to do things that you know are good for you but you don't really want to do.

In 1967, the world health community launched a global effort to eradicate smallpox. It took a coordinated, worldwide effort, required the commitment of every government, and cost $130 million dollars. By 1977, smallpox had disappeared.