Cases of secondary integration (Level V), the most advanced level of development through positive disintegration, are easily found within the religious sphere. To find a secular case of secondary integration presents a greater challenge. The life of Peace Pilgrim (1908–1981), known personally to a great many people, appears to be such a case. The course of her personality development appears to reflect successive phases of multilevel growth. This article examines Dabrowski's concept of secondary integration, personality ideal, and Peace Pilgrim's state of inner peace in an attempt to arrive at some purchase on these concepts. This study also raises the subject of spiritual experience as personal experience unbounded by systems of religious beliefs. This stratospheric study does carry actual implications for gifted education.