One evening, David ran to the house and said to his mother, "Mom, what do you 1 Jack? Bob tells me that Jack…"
"My boy, does your 2 go through (经过) the three sieves (滤网) ?" his mother asked.
"Sieves? What are 3 asked David.
"Well, the first sieve is 4 true. Is your story true?" his mother asked.
"I don't know, 5 Bob says…", David answered.
"Well, 6 the second sieve — being good? Is your story good? "
"No," David said.
"Now the 7 sieve—being necessary (必要的) . Do you have to tell the story to 8 people?" his mother asked.
"No, Mom. It's just a 9 thing, "said David.
"Well, my boy," the mother said, " 10 it is not necessary, not good, and not true, let it go."
