UFOs: The reliable cases are uninteresting and in the interesting cases are unreliable.

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.

You mustn't think of the Universe as a wilderness. It hasn't been that for billions of years," he said. "Think of it more as... ..cultivated.

We are the only species on the planet, so far as we know, to have invented a communal memory stored neither in our genes nor in our brains. The warehouse of this memory is called the library

We are the children equally of the Sky and the Earth.

We live at a moment when our relationships to each other, and to all other beings with whom we share this planet, are up for grabs.

We live on a mote of dust suspended in a sunbeam