There are two sentences inscribed upon the Delphic oracle, hugely
accommodated to the usages of man's life: "Know thyself", and "Nothing
too much"; and upon these all other precepts depend.
-- Plutarch (46-120 AD)
-- Consolation to Apollonius
Menenius Agrippa concluded at length with the celebrated fable It
once happened that all the other members of a man mutinied against
the stomach, which they accused as the only idle, uncontributing part
in the whole body, while the rest were put to hardships and the expense
of much labour to supply and minister to its appetites....