God not only plays dice, he throws them in the corner where you can't see them.
Why do we remember the past, but not the future?
The human race shouldn't have all its eggs in one basket, or on one planet. Let's hope we can avoid dropping the basket until we have spread the load.
Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it.
You can't regulate every lab in the world.
Nothing is fool-proof to a sufficiently talented fool.