Edith Stein is a person who was born in the Jewish traditionally religious family. In her youth she lost her faith in God. However in her life she was seeking the truth. In this search she was very honest. The article first shows different definitions of truth. Then he takes the presentation of Edith Stein’s, the ways of phenomenological discov-ery of the truth about a human person. Finally, it shows her coming to the discovery of the God of Love, who has drawn her to mystical union in the spirituality of Carmel. Edith Stein died in the concentration camp in Auschwitz, experiencing the mystery of the Cross of Christ and sacrificing herself for her people.