Advice for the great

I cannot find the original, but I remember reading story this years ago. I will paraphrase.

It occurred one day to an avaricious and headstrong monarch that perhaps he should think about how posterity would see him, so he summoned a wise man of the kingdom and asked him: "What can I do to benefit the world?"

The wise man answered "The best single deed within your power is to sleep until noon, so that for that interval you will not afflict mankind."