When you have been wandering the cosmos from one end of eternity to another for nearly a thousand years, what's your philosophy of life, the universe, and everything?

Doctor Who is 50 years' old in 2013. Through its long life on television and beyond it has inspired much debate due to the richness and complexity of the metaphysical and moral issues that it poses. This is the first in-depth philosophical investigation of Doctor Who in popular culture. From 1963's An Unearthly Child through the latest series, it considers continuity and change in the pictures that the program paints of...