There are three levels of happiness: the pleasant life, the good life, and the meaningful life.

The next frontier is our own selves.

There are three levels of happiness: the pleasant life, the good life, and the meaningful life.

The essence of being human is being creative.

In 1920 [H.G. Wells] described human history as becoming more and more a race between education and catastrophe.

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

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.