The Apollo pictures of the whole Earth conveyed to multitudes something well known to astronomers: On the scale of the worlds - to say nothing of stars or galaxies - humans are inconsequential, a thin film of life on an obscure and solitary lump of rock and metal

Human history can be viewed as a slowly dawning awareness that we are members of a larger group Groups of people from divergent ethnic and cultural backgrounds working in some sense together [is] surely a humanizing and character building experience. If we are to survive, our loyalties must be broadened further, to include the whole human community, the entire planet Earth.

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.

We have entered, almost without noticing, an age of exploration and discovery unparalleled since the Renaissance.

I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.

Our ancestors worshipped the Sun, and they were not that foolish. It makes sense to revere the Sun and the stars, for we are their children.

All colours are arbitrary.