From Eihei Dogen’s Genjo Koan:

Here is the place; here the Way unfolds.  The boundary of realization is not distinct, for the realization comes forth simultaneously with the mastery of Buddha dharma.  Do not suppose that what you realize becomes your knowledge and is grasped by your consciousness.  Although actualized immediately, the inconceivable may not be distinctly apparent.  Its appearance is beyond your knowledge.