With ongoing discussions between neuroscientists and philosophers on the existence, or not, of free will, and with so many people in the so-called ‘enlightened’ West still believing that their fate is somehow linked to the movements of the stars and planets, what does modern physics have to say on the matter of determinism and chance? Indeed, is our future preordained? This lecture will be a whistle-stop tour of Einsteinian relativity, quantum indeterminacy and whether, according to our current understanding of the nature of time, the future is knowable.