Follow the evidence wherever it leads, and question everything.

Photons are accurately and legitimately described as waves and particles at the same time. They are genuine wavicles.

Essentially every scientist, when posed with the question, "If you want to get science knowledge from Mars, do you want to send a geologist or do you want to send a robot?" Well, the real answer is, you can send 100 robots for the price of sending one geologist, so let's send 100 robots to 100 different locations, and then we would all benefit. So that's the answer you would get. And I agree with that answer.

Not only are we in the universe, the universe is in us. I don't know of any deeper spiritual feeling than what that brings upon me.

The universe is almost 14 billion years old, and, wow! Life had no problem starting here on Earth! I think it would be inexcusably egocentric of us to suggest that we're alone in the universe.

If you want to assert a truth, first make sure it's not just an opinion that you desperately want to be true.

If Neptune were analogized with a Chevy Impala in mass, then how big is pluto compared to that? Pluto would be a matchbox car sitting on the curb.