It is not clear to me whether the insouciance of youth will be the doom of humanity or its salvation. I prefer to think the latter, but I have my dou… - Charles Sheffield

See, everybody looks at the world from his own point of view. I call it the ground state of the resting mind. And your brain does the same thing, left alone it returns to and thinks about what it’s really interested in.

The Asteroid Belt contains everything from substantial bodies like Ceres, seven hundred and fifty kilometers across, all the way down to house-sized boulders, pebbles, and grains of sand. One good rule of thumb is that for every object of a given size, there will be ten times as many one-third that size.

The superior strain of peas is the one whose genetic composition allows it to adapt to whatever environment it is presented with. People are not peas, but in one respect they are not very different from them: some have superior genetic composition to others.