The tenacity of life is mind-boggling. We keep finding it where no one thought it could be.

If an alien lands on your front lawn and extends an appendage as a gesture of greeting, before you get friendly, toss it an eightball. If the appendage explodes, then the alien was probably made of antimatter. If not, then you can proceed to take it to your leader.

... there is no shame in not knowing. The problem arises when irrational thought and attendant behavior fill the vacuum left by ignorance.

The more I learn about the universe, the less convinced I am that there's any sort of benevolent force that has anything to do with it, at all.

Science reveals that all life on Earth is one.

Emotional truths woven by lawyers in the court of law are apparently more important than the truths of actual events. I have grown to fear for those whose innocence became trapped within the legal system.

The first colony on Mars is not going to be built by a private company. How are you going to make money? You're not.