Possibly everyone will travel by air in another fifty years. I'm not sure I like the idea of millions of planes flying around overhead. I love the sky's unbroken solitude. I don't like to think of it cluttered up by aircraft, as roads are cluttered up by cars. I feel like the western pioneer when he saw barbed-wire fence lines encroaching on his open plains. The success of his venture brought the end of the life he loved.

Without death there would be no awareness of life, and the recurring selection and renewal that has caused life's progress would be ended.

Man has risen so far above all other species that he competes in ways unique in nature. He fights by means of complicated weapons; he fights for ends remote in time.

The individual is at the apex of his species' past, at the entrance to its future.

A certain amount of danger is essential to the quality of life.

We cannot allow the natural passions and prejudices of other peoples to lead our country to destruction.

Life's values originate in circumstances over which the individual has no control.