Imagination will often carry us to worlds that never were. But without it we go nowhere.
Science is a way of thinking much more than it is a body of knowledge.
We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.
Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.