The mystic may get his union with the higher self as the reward for his reverent devotion to it. But its light will shine down only into those parts of his being which were themselves active in the search for union. Although the union may be a permanent one, its consummation may still be only a partial one. If his intellect, for example, was inactive before the event, it will be unillumined after the event. This is why many mystics have attained their goal without a search for truth before it or a full knowledge of truth after it. The simple love for spiritual being brought them to it through their sheer intensity of ardour earning the divine Grace. He only gets the complete light, however, who is completely fitted for it with the whole of his being. If he is only partially fit, because only a part of his psyche has worked for the goal, then the utmost result will be a partial but permanent union with the soul, or else it will be marred by the inability to keep the union for longer than temporary periods.
-- Notebooks Category 20: What Is Philosophy? > Chapter 4: Its Realization Beyond Ecstasy > # 9