Firstly's Law of Combat

• Friendly bomber fire - isn't
• You are not superman - dictor and Naga pilots take note
• A gaping hole in your hull is EVE's way of telling you to slow down
• If it's a terrible fit, but it works, it isn't terrible
• Try to look T1 fit - the hostiles may be low on ammo and not want to waste a round on you
• If at first you don't succeed, get out the batphone
• If you are forward of your fleet, the hostiles will have optimal range scripts loaded
• Never warp to the 'x' of any pilot braver than yourself
• Never backstop an FC crazier than you
• Never forget that your doctrine fit was the cheapest fit your theorycrafters could come up with
• If your gank is going really well, it's bait
• Hostiles will only attack you on two occasions: when they're ready; when you're not
• No plan survives long-point range
• There is no such thing as a perfect fleet comp
• 30km bombs always detonate in 27km
• With a free kill on the line, there's no such thing as a carebear
•  A de-aggressing hostile is one who is rejoining his much larger gang on the other side of the gate
• The easy route to your destie is always gate-camped
• Teamwork is essential - it gives the hostiles other primaries to call
• If you are low on everything but hostiles, you're on grid
• When you have secured the field, make sure the hostiles know it, too
• No combat-ready fleet comp has ever held up to doctrine
• No doctrine-ready fleet comp has ever help up to combat
• If the hostiles are within optimals, so are you
• The only thing more accurate than hostile bombs are friendly bombs
• The batphone will fail as soon as you have a hostile super tackled
• Jabber pings become ineffective at night and in RUSTZ, especially in both
• Anything you do can get you killed, including nothing
• When both sides are convinced they're about to whelp, they're both right
• High-SP pilots are predictable, but New Eden is full of noobs
• Overview-Bug Motto: Pod 'em all. Let Diplo sort it out
• Your gang will land on grid 5 seconds after you're already down
• Bombs are equal opportunity munitions
• The script you need will be the one you didn't bring
• The damage type you have loaded will be your hostile's strongest resist
• When in doubt, burn out your high slots
• When you're low on ammo, the hostile will be able to keep his transversal up
• PvP experience is something you only get after you need it
• If you get out in structure, it means you were smart enough to think of a plan, dumb enough to try it, and lucky enough to survive

Lovingly adapted from a slightly better-known version.