Subhuti said: "If I understand correctly, one who wishes to reach perfect wisdom should study the way things are in the world and should practice the perfections fully and in depth but should not believe them to be ultimately real, nor should he make concepts and doctrines out of them."
The Buddha replied: "Just so, Subhuti. The one who contemplates existence in this way knows the nature of the conditioned and of the unconditioned and makes himself an expert in pointing out the truth to others, both with words and without words."
Subhuti asked: "But is this just for the wise and the intelligent?"
"No, indeed," replied the Buddha. "This is open to all, even to the dull witted and to those who can't pay attention. The door is open to anyone who wants to tread this path--but not to the person who is lazy and indifferent."