My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.
The real challenge is to work out what aliens might actually be like.
God not only plays dice, he throws them in the corner where you can't see them.
Without imperfection, you or I would not exist.
It often happens that I have an idea, but then I try to fill in the intermediate steps and find they don't work, so I have to give it up.
Many badly needed goals, like fusion and cancer cure, would be achieved much sooner if we invested more.