Never fire a laser at a mirror.

I've spent a lot of my life among people brighter than myself.

I'd visit the near future, close enough that someone might want to talk to Larry Niven and can figure out the language; distant enough to get me decent medical techniques and a ticket to the Moon.

Anything that can go wrong, will

Species evolve to meet the environment. An intelligent species changes the environment to suit itself. As soon as a species becomes intelligent, it should stop evolving.

I am trying to prevent a bloodbath. Is that clear enough for you? I'm trying to prevent a civil war that could kill half the people in this world.

Never tell a computer to forget it.