"Imagination will often carry us to worlds that never were. But without it, we go nowhere."

"We are the local embodiment of a cosmos grown to self-awareness."

"An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence. Because God can be relegated to i…"

"If we are to survive, we must look to the stars."

"The truth may be puzzling. It may take some effort to grasp. It may be counterintuitive. It may contradict deeply held prejudices. It may not be easy to do what the truth demands. But none of that mak…"