The 10 Commandments of Auto Repair

Funny, but good rules of thumb to safely work on your car.
By Matthew Wright, About.com

1-Thou shalt not place any essential portion of thy anatomy beneath a car that is not properly supported with jack stands or blocks.
2-Thou shalt not work on any part of the starting or charging system without first disconnecting the battery.
3-Thou shalt suffer no flame or spark near the battery or the fuel system.
4-Thou shalt forsake the open end of the wrench, and whenever possible to use always the box end upon thy nuts and thy bolts.
5-Thou shalt always securely block the wheels of the car before starting work, lest thee run thyself over with thine own car.
6-Thou shalt never lose thy temper or thy patience. Remember: "Act in haste and you will repent at your leisure."
7-Thou shalt always exercise extreme care when opening thy radiator, lest thee parboil thyself or some innocent bystander.
8-Thou shalt clean up any and all of the fluids that thy auto may emit, lest they ignite or poison thy pet, thy child, thy soil or thy groundwater.
9-Thou shalt always place thy car's transmission in Park or Neutral before commencing work.
10-Thou shalt never forget the laws of ASSUME, K.I.S.S., and Murphy, and never blame another person for thine own errors.