In a world of moral certainty, the unthinkable becomes permissible.

The genius of America may be that it has built "the fall of Rome" into its very makeup: it is very consciously a constant work in progress, designed to accommodate and build on revolutionary change.

At some point in the next century the number of invented languages will probably overtake the number of surviving natural languages.

Silence, too, can be torture.

I just wasn't one of those girls who dreamt of her wedding day and the birth of her first child.

I think Smalltalk is inappropriate for serious industrial developments. After all, run time is a little late to find out whether you have a landing gear.

Much of the most important evils that mankind have to consider are those which they inflict upon each other through stupidity or malevolence or both.

If your why is strong enough you will figure out how!

The owls are gathering; find out why soon.

I grew up in east Tennessee, and everybody knew everybody's business.

A friend tells you what you want to hear;a best friend tells you the truth.

The moon is a good, solid base to build a space travel organization in the community.

Advice is offensive, it shows us that we are known to others as well as to ourselves.