Do you think it's possible that things that seem to be discrete in three dimensions might all be part of the same bigger object in four dimensions? ...What if humanity- that collective noun we so often employ- really is, at a higher level, a singular noun? What it what we perceive in three dimensions as seven billion individual human beings are really all just aspects of one giant being?

No one disputes that seeming order can come out of the application of simple rules. But who wrote the rules?

Paul Levinson has outdone himself: The Plot to Save Socrates is a philosophically rich gem full of big ideas and wonderful time-travel tricks.

If theft is advantageous to everyone who succeeds at it, and adultery is a good strategy, at least for males, for increasing presence in the gene pool, why do we feel they are wrong? Shouldn't the only morality that evolution produces be the kind Bill Clinton had - being sorry you got caught?

Since ancient times, the philosophers' secret has always been this: we know that God does not exist, or, at least, if he does, he's utterly indifferent to our individual affairs--but we can't let the rabble know that; it's the fear of God, the threat of divine punishment and the promise of divine reward, that keeps in line those too unsophisticated to work out questions of morality on their own.

A science fiction writer should try to combine the intimately human with the grandly cosmic.

General principles should not be based on exceptional cases.