We've created life in our own image.

It is tribute to how far we have come in theoretical physics that it now takes enormous machines and a great deal of money to perform experiments whose results we can not predict.

If time travel is possible, where are the tourists from the future?

Chaos, when left alone, tends to multiply.

To my mathematical brain, the numbers alone make thinking about aliens perfectly rational.

Eternity is a long time, especially towards the end.

I have experimental evidence that time travel is not possible.