If you don't like what someone has to say, argue with them.

Either you repeat the same conventional doctrines everybody is saying, or else you say something true, and it will sound like it's from Neptune.

The greatest progress is in the sciences that study the simplest systems. So take, say, physics - greatest progress there. But one of the reasons is that the physicists have an advantage that no other branch of sciences has. If something gets too complicated, they hand it to someone else.

I like the cold weather. It means you get work done.

When Rumsfeld gets up on television and says we have definitive intelligence that al Qaeda is working with Iraq, how is an ordinary citizen supposed to react? They won't tell you the evidence, and when anyone asks, they say, 'Well, you know: It's secret.'

When you look at a corporation, just like when you look at a slave owner, you want to distinguish between the institution and the individual. So slavery, for example, or other forms of tyranny, are inherently monstrous. The individuals participating in them may be the nicest guys you can imagine.