Not so many years ago there was no simpler or more intelligible notion than that of going on a journey. Travel - movement through space - provided the universal metaphor for change. One of the subtle confusions - perhaps one of the secret terrors - of modern life is that we have lost this refuge. No longer do we move through space as we once did.
It is only a short step from exaggerating what we can find in the world to exaggerating our power to remake the world. Expecting more novelty than there is, more greatness than there is, and more strangeness than there is, we imagine ourselves masters of a plastic universe. But a world we can shape to our will is a shapeless world.