Let's take a look at some codes:[1]

Je'daii
There is no ignorance; there is knowledge.
There is no fear; there is power.
I am the heart of the Force.
I am the revealing fire of light.
I am the mystery of darkness
In balance with chaos and harmony,
Immortal in the Force.

Jedi Original
Emotion, yet peace.
Ignorance, yet knowledge.
Passion, yet serenity.
Chaos, yet harmony.
Death, yet the Force.

Jedi Revised
There is no emotion, there is peace.
There is no ignorance, there is knowledge.
There is no passion, there is serenity.
There is no chaos, there is harmony.
There is no death, there is the Force.

Jedi Modern Form
Jedi are the guardians of peace in the galaxy.
Jedi use their powers to defend and to protect.
Jedi respect all life, in any form.
Jedi serve others rather than ruling over them, for the good of the galaxy.
Jedi seek to improve themselves through knowledge and training.

Jedi Lightsaber Code
The crystal is the heart of the blade.
The heart is the crystal of the Jedi.
The Jedi is the crystal of the Force.
The Force is the blade of the heart.
All are intertwined.
The crystal, the blade, the Jedi.
We are one.

Sith
Peace is a lie, there is only passion.
Through passion, I gain strength.
Through strength, I gain power.
Through power, I gain victory.
Through victory, my chains are broken.
The Force shall free me.

Darth Ruin's Variation
There is no passion…there is solely obsession.
There is no knowledge. There is solely conviction.
There is no purpose. There is solely will.
There is nothing…
Only me.

Smuggler Code:
"Never fight when you can bluff.
Never bluff when you can run.
Never run when you can sneak.
If no one knows you're there, you win.

Mandalorian Resol'nare:
"You will raise your young as Mandalorians—and defend them.
You will wear our armor, and speak our language.
And you will serve the clan, and rally when called.
These are the Resol'nare—the Six Actions—sacred to our movement.
Do them—and you may live to call yourselves Mandalorians!"

So, aside from noticing that the Jedi have too many codes, can't seem to decide on a single formula, and that Luke Skywalker is no poet... Which one do you like best? Which one do you think is most valid? How do you interpret that code?

I decided to add the two non-Force involved codes as an additional contrast.

I think you can figure out which one I follow...