Three butterflies

Three butterflies, flying up to a burning candle, began to talk about the nature of the fire. One, flying up to the flame, returned and said:

- The fire is shining.

Another flew closer and seared wing. Arriving back, she said:
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- It burns!

The third, having flown very close, disappeared in the fire and did not return. She found out what she wanted to know, but was no longer able to tell the rest.

The one who receives knowledge is deprived of the opportunity to talk about him, so the knowledgeable is silent, and the speaker does not know.