Theologians and leaders from many Churches and from the major world religions, including the last four popes, have acknowledged as unique in Christian history the spiritual gifts poured forth through Chiara Lubich. Her spirituality of unity has the ultimate goal of contributing to the unity for which Jesus prayed to his Father: May they all be one (Jn 17:21). This volume gathers her essential writings and for the first time presents them in a systematic fashion. It is a summa of the charism of unity, which will lead readers to ponder, understand and experience a spirituality particularly suited to the era in which we live.