On the night before His death, His betrayer already at work, our Lord lifted a simple chalice in a world covered in darkness. Elevating it, He sealed for eternity a new covenant between God and man, imparting to us the gift of His Body and Blood. In these sublime meditations on the events of Holy Thursday, Nobel laureate Fran?ois Mauriac reminds us of the ineffable value of the gift given us that evening in the Upper Room: the Eucharist,...