The Two Commandments?

Part of our discussion of standards on the Transitional Genealogists Forum list made me think of what one should tell a beginning genealogist if you both were in a hurry. My candidates are The Two Commandments:

1. Don't believe everything you see; check it out.

2. Remember where you found stuff; somebody's bound to need it again.

If you cut out the elaborations (after the semicolons), it's only ten words!