Various Roman Catholic figures during the last hundred years have engaged with vedāntic themes relating to self-enquiry. Two Benedictine pioneers of these spiritual exercises, Bede Griffiths and Henri Le Saux (Swami Abhishiktananda), elaborated and practiced these themes through which they sought to articulate visions of the divine presence within humanity. This essay discusses one central aspect of their “experiments with truth,” namely, their experiential and conceptual struggles to point toward the “trinitarian mystery” with the terminology of Advaita Vedānta.