The idea that none of us is truly alone, that everyone has a complementary other of the opposite sex, has been a prevailing belief throughout the ages. From Plato's story of the Hermaphrodite who was split in two, eternally fated to search ceaselessly for it's other half, to Schopenhauer's theories of soul attraction, the notion of twin souls has always been central in any metaphysical speculation on the evolution of humankind.In their landmark new book on the subject of twin soulship, authors Patricia Joudry an Maurie Pressman have given the idea fresh impetus within a modern context. Their intelligent and in-depth exploration of the evolution of the soul and their discussion of gender balance, central to the theory, makes for compelling reading. It is an idea whose time has come at last.This extraordinary ontological event occurs when the two matching individual have evolved to particular levels of spiritual attainment. For the many individuals who have experienced disappointment in love and despair of ever finding happiness in relationship, here is a model to which we all can aspire.