There's a story about economics, that it's all trivial or obvious except....the except being Ricardo on trade. The point was made when a mathematician asked an economist whether there was anything in economics that was not trivial or obvious. As opposed to, as in mathematics, attempting to unlock the secrets of the universe of course.
I was reminded of this when reading about Sam Johnson and his writing of his dictionary recently. I came across this quote:
Yes, Sir, no man is a hypocrite in his pleasures.