Golden rule of readability

Golden Rule:
Readability on a first place. It is a general rule in software engineering. Of course, everything should be done with a dose of common sense.

Paraphrased by extremists:
It is better to have a readable and not working code, rather than non readable and working one. 

Explanation:
One is able to fix readable code easily. Although the second statement says the code works, it is still not readable!