All this month we are asking writers, critics and bibliophiles to choose the book that changed them.

Colin Dexter, Margaret MacMillan, Owen Jones and Emma Brockes have already had their say; Andrew Motion, Diana Athill, David Kynaston, Linda Grant, Lucy Mangan and many others will be choosing their life-changing book over the coming weeks.

But is there a book that changed your life? This thread will be open until the end of the month to give you a chance to say which book changed your view of the world.

Is there a book you especially love or which you return to again and again? Ideally, don’t just give the title of the book. Explain why it meant – and perhaps continues to mean – so much to you, and spell out in what way it made you rethink the world.