We are at a crossroads in human history. Never before has there been a moment so simultaneously perilous and promising. We are the first species to have taken evolution into our own hands.

We are star stuff which has taken its destiny into its own hands.

I believe our future depends powerfully on how well we understand this cosmos in which we float, like a mote of dust in the morning sky.

Any civilization that doesn't develop space travel dies.

The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiased a mind as we can muster.

Our posturings, our imagined self-importance , the delusion that we have some privileged position in the universe are challenged by this point of pale light.

Human history can be viewed as a slowly dawning awareness that we are members of a larger group.