Having last month considered the question of Bodhisattva Fully Composed, we consider the Buddha’s realization that not everything should be explained.
With that, the Buddha said to the bodhisattva Fully Composed: “Well done, you of great good intent! Well done! You have skillfully questioned the Tathāgata regarding this profound, unequaled, all-ferrying, transcendental essence. You should know that you will enable many to benefit, you will please and bring ease to human and heavenly beings, and you will relieve living beings of their suffering. This is great and real compassion—trust wholly and completely that this is true. By this direct cause and its outgrowths, you will surely realize and quickly achieve ultimate enlightenment; you will also enable all living beings, now and in the future, to realize and achieve ultimate enlightenment.
“O you of good intent! By virtue of sitting upright and properly for six years at the place of the Way beneath the bodhi tree, I realized and achieved the full dynamic of ultimate enlightenment. With the insight of a buddha I perceived that not everything should be explained. What is the reason for this? It is that the conditioned desires of all living beings are not the same. Since conditioned desires differ, ways of expounding the Dharma are many and various. For more than forty years I have expounded the Dharma in all manner of ways through adeptness in skillful means, but the core truth has still not been revealed. That is why living beings differ regarding realization of the Way, and do not realize and quickly achieve ultimate enlightenment.
See Difference in Meaning Between Pre-Lotus Period and Lotus Period