Susan Adele Greenfield, Baroness Greenfield, (born 1 October 1950) is a British scientist, writer, broadcaster, and member of the House of Lords. Greenfield, whose speciality is the physiology of the brain, has worked to research and bring attention to Parkinson's disease and Alzheimer's disease.

Greenfield is Professor of Synaptic Pharmacology at Lincoln College, Oxford. On 1 February 2006, she was installed as Chancellor of Heriot-Watt University in Edinburgh. Until 8 January 2010, she was director of the Royal Institution of Great Britain, but following a review, she was made redundant, and subsequently announced that she would be suing for discrimination.

Our individuality is under attack as never before. Two huge new forces new technology and the rise in fundamentalism are in their different ways combining to threaten the control of our own minds and so the whole way our society functions. We have never more urgently needed to look at what we want for ourselves as individuals for our children, and for our future society. This book will draw on the latest findings in neuroscience to show how far we are and can be in control of the development of our brains and minds and the actions we need to take now both to safeguard our individuality and to find the fulfilment which our current unfettered materialism cannot provide. All this inevitably poses many questions about human nature, our past, what makes us individual, the connection between the brain and the mind, what a society of fulfilled individuals would actually mean.all of which this book attempts to answer.