Leonard Cohen once wrote in a song: "There is a crack in everything/That's how the light gets in." Combining revealing memoir and the inspirational stories of others, Sue Mosteller, the executrix of Henry Nouwen's literary estate and an active, well-known participant in L'Arche Community, brings to life the meaning of that resonant phrase and illuminates why human weaknesses, the "cracks" in our personalities, are actually the greatest sources of light for the world.