“We are shaped not only by our current geography but by our ancestral one as well. Americans, for instance, retain a frontier spirit even though the only frontier that remains is that vast open space between the SUV and strip mall. We are our past.”

“Undoubtedly, our path is not of the easiest; but, just as undoubtedly, we are not to be frightened by difficulties. Paraphrasing from the well-known words of Luther, Russia might say: ‘Here I stand on the frontier between the old, capitalist world and the new, socialist world. Here on this frontier I unite the efforts of the proletarians of the West and of the peasantry of the East in order to shatter the old world. May the god of history be my aid!”

“Ye see, Rab, it's due to the way we feel about our arseholes. We now believe, as a species, if our soul is located anywhere in our bodies, it's up our arses. That's where it all goes. It makes sense. That's why we're obsessed with anal jokes, anal sex, anal hobbies...the arsehole - not the brain, not space - is the last frontier. That's what makes us revolutionaries.”

“New knowledge enhances an ever increasing sense of our own ignorance. The more we know, the more we know we don't know. Feynman called it 'the expanding frontier of ignorance'.”

“This is space. It's sometimes called the final frontier.(Except that of course you can't have a final frontier, because there'd be nothing for it to be a frontier to, but as frontiers go, it's pretty penultimate . . .)”

“Dreams are our only geography—our native land.”