an expression of a general truth or principle,especially an aphoristic or sententious one:
the maxims of La Rochefoucauld.
a principle or rule of conduct.
Source: Word of the day: INIQUITY.
‘They’ll assume you’re following certain maxims, and because of that platform of understanding, you can be much more meaningful.’ en.oxforddictionaries.com
Origin of maxim
1400-50; late Middle English maxime Medieval Latin maxima (orig. in phrase maximaprōpositiō axiom, literally, greatest proposition),noun use of feminine of Latin maximus,superlative of magnus great; see much