長阿含經 7.p51

7.p51

Kāśyapa said, “Those who are wise explain things with parables. Now, I’ll explain this for you with a story. Once, there was a person who was blind from birth. They didn’t know the five colors, such as blue, yellow, red, and white, or coarse, fine, long, and short. They hadn’t seen the sun, moon, stars, hills, or valleys. Someone asked them, ‘What are the five colors, such as blue, yellow, red, and white?’