We should not be ashamed of not having answers to all questions yet... I'm perfectly happy staring somebody in the face saying, 'I don't know yet, and we've got top people working on it.' The moment you feel compelled to provide an answer, then you're doing the same thing that the religious community does: providing answers to every possible question.
Neil deGrasse TysonIf Mars formed life, then life on Earth could have been seeded by life on Mars, making every life form on Earth descended from Martians.
Neil deGrasse TysonWhen I wrestled, I would set aside the time to wrestle, so that in my mind it didn't interfere with my study time. If I'd say, "I'm going to study this many hours, then I'm going to go work out and wrestle," then when that time comes, you don't feel like you should be doing something else. That helped me psychologically. But otherwise? When I'm wrestling, I'm not studying the universe. And when I'm studying the universe, I'm not wrestling.
Neil deGrasse TysonThe very nature of science is discoveries, and the best of those discoveries are the ones you don't expect.
Neil deGrasse Tyson