ax•i•om (ak´së-üm) n.
1. A self-evident or universally recognized truth; a maxim.
2. An established rule, principle, or law.
3. Abbr. ax. A self-evident principle or one that is accepted as true without proof as the basis for argument; a postulate.

Axiom #5

Never assume,
you just make an ASS out of U and ME.