D. W. Winnicott was one of the most influential figures in child psychiatry. In this landmark work, re-issued on the fiftieth anniversary of his death, he lays out his ground-breaking theories of child development, and how children become independent from their parents. Along the way Winnicott touches on a wide range of questions, from why babies cry and why toddlers are aggressive to how to teach children about sex. Above all, Winnicott encourages parents to ignore external pressures and guilt, and to trust their own instincts. His accessible and non-judgemental approach remains as radical today as it was in the 1960s.