In ancient Greece (469 - 399 BC) Socrates was widely lauded for his wisdom. One day the great philosopher came upon an acquaintance who ran up to him excitedly and said, Socrates, do you know what I just heard about one of your students?"
"Wait a moment," Socrates replied. "Before you tell me I'd like you to pass a little test. It's called the Triple Filter Test."
"That's right," Socrates continued, "before you talk to me about my student, let's take a moment to filter what you're going to say. The first filter is TRUTH. Have you made absolutely sure that what you are about to tell me is true?"
"No," the man said, "actually I just heard about it and..."
"All right," said Socrates. "So you don't really know if it's true or not. Now let's try the second filter, the filter of GOODNESS. Is what you are about to tell me about my student something good?"