The growth of the human mind is still high adventure, in many ways the highest adventure on earth.

The capacity for hope is the most significant fact of life. It provides human beings with a sense of destination and the energy to get started.

A library is the delivery room for the birth of ideas, a place where history comes to life.

To be able to rise from the earth; to be able, from a station in outer space, to see the relationship of the planet earth to other planets; to be able to contemplate the billions of factors in precise and beautiful combination that make human existence possible; to be able to dwell on an encounter of the human brain and spirit with the universe

The old emphasis upon superficial differences that separate peoples must give way to education for citizenship in the human community.

The heart of the matter is that some people like to cause injury or death to living things. And many of those who do not are indifferent to those who do.

Why are people more appalled at what they term an unnatural form of dying than by an unnatural form of living?