Those who dream of the joys of living in a space colony should live in a space colony.

Fence straddlers have no balls. In compensation, however, they enjoy a comfortable seat and can retreat swiftly, when danger threatens, to either side of the fence. There is something to be said for every position.

High technology has done us one great service: It has retaught us the delight of performing simple and primordial tasks - chopping wood, building a fire, drawing water from a spring

I believe in nothing that I cannot touch, kiss, embrace.... The rest is only hearsay.

In the American Southwest, I began a lifelong love affair with a pile of rock.

When the situation is desperate, it is too late to be serious. Be playful.

My loyalties will not be bound by national borders, or confined in time by one nation's history, or limited in the spiritual dimension by one language and culture. I pledge my allegiance to the damned human race, and my everlasting love to the green hills of Earth, and my intimations of glory to the singing stars, to the very end of space and time.