In very recent times humanity has learnt a vast amount about the universe the past and
itself. But through our remarkable successes in acquiring knowledge we have learned how much we
have yet to learn: the science we have for example addresses just 5% of the universe
pre-history is still being revealed with thousands of historical sites yet to be explored and
the new neurosciences of mind and brain are just beginning.What do we know and how do we know
it? What do we now know that we don't know? And what have we learnt about the obstacles to
knowing more? In a time of deepening battles over what knowledge and truth mean these
questions matter more than ever.Bestselling polymath and philosopher A. C. Grayling seeks to
answer them in three crucial areas at the frontiers of knowledge: science history and
psychology. In each area he illustrates how each field has advanced to where it is now from
the rise of technology to quantum theory from the dawn of humanity to debates around national
histories from ancient ideas of the brain to modern theories of the mind.A remarkable history
of science life on earth and the human mind itself this is a compelling and fascinating tour
de force written with Grayling's verve clarity and remarkable breadth of knowledge.