If you put a large switch in some cave somewhere, and a sign on it saying, "End-of-the-World Switch. PLEASE TO NOT TOUCH," the paint wouldn't even have time to dry.

Dwight D. Eisenhower changed America forever with the creation of the interstate highway program.

The next frontier is our own selves.

In order for the Prevail Scenario to work ... you will have to have a world in which you have both differences between people and opportunities for intense connectedness.

Transcendence is the only real alternative to extinction. This is serious. This may be the ultimate final exam.

The physician who waits until dead certain of a diagnosis before acting is likely to wind up with a dead patient. Sometimes things develop so rapidly that only early action-back when you're still somewhat uncertain-stands a chance of being effective, as in catching cancer before it metastasizes.

Informing all of Carson's work was the idea that although human beings are part of nature, we are distinguished by our power to alter it irreversibly.