Jovan knew about luck. Like wine: when luck turns sour, the whole barrel is sour. - Larry Niven

Writing is, therefore, both a form of compulsive behavior and, I frequently tell people, a self-induced form of mental illness. Those few writers who don’t start off by being a little nuts soon get that way as a direct result of their vocation.

I myself have dreamed up a structure intermediate between Dyson spheres and planets. Build a ring 93 million miles in radius - one Earth orbit - around the sun. If we have the mass of Jupiter to work with, and if we make it a thousand miles wide, we get a thickness of about a thousand feet for the base.

And it has advantages. The Ringworld will be much sturdier than a Dyson sphere. We can spin it on its axis for gravity. A rotation speed of 770 m/s will give us a gravity of one Earth normal. We wouldn't even need to roof it over. Place walls one thousand miles high at each edge, facing the sun. Very little air will leak over the edges.

Lord knows the thing is roomy enough. With three million times the surface area of the Earth, it will be some time before anyone complains of the crowding.

travel hopefully is a better thing than to arrive, and the true success is to labour. - Robert Louis Stevenson